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Full vulnerability report · 2026
CVE-2026-23214High confidence

btrfs: reject new transactions if the fs is fully read-only

Linux · Linux

5.5MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 11 May 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.12% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Linux Linux and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

24 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 21 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.12.73-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcelinuxAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.18.10-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.18.10-1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-fdeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-tegraAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-xilinxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-8015

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: btrfs: reject new transactions if the fs is fully read-only [BUG] There is a bug report where a heavily fuzzed fs is mounted with all rescue mount options, which leads to the following warnings during unmount: BTRFS: Transaction aborted (error -22) Modules linked in: CPU: 0 UID: 0 PID: 9758 Comm: repro.out Not tainted 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [inline] RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611 Call Trace: <TASK> btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705 btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157 btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517 btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708 btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130 btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499 btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628 evict+0x5f4/0xae0 fs/inode.c:837 __dentry_kill+0x209/0x660 fs/dcache.c:670 finish_dput+0xc9/0x480 fs/dcache.c:879 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661 generic_shutdown_super+0x67/0x2c0 fs/super.c:621 kill_anon_super+0x3b/0x70 fs/super.c:1289 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318 task_work_run+0x1d4/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x694/0x22f0 kernel/exit.c:971 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x44f639 Code: Unable to access opcode bytes at 0x44f60f. RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> Since rescue mount options will mark the full fs read-only, there should be no new transaction triggered. But during unmount we will evict all inodes, which can trigger a new transaction, and triggers warnings on a heavily corrupted fs. [CAUSE] Btrfs allows new transaction even on a read-only fs, this is to allow log replay happen even on read-only mounts, just like what ext4/xfs do. However with rescue mount options, the fs is fully read-only and cannot be remounted read-write, thus in that case we should also reject any new transactions. [FIX] If we find the fs has rescue mount options, we should treat the fs as error, so that no new transaction can be started.

What

In the Linux kernel, the following vulnerability has been resolved: btrfs: reject new transactions if the fs is fully read-only [BUG] There is a bug report where a heavily fuzzed fs is mounted with all rescue mount options, which leads to the following warnings during unmount: BTRFS: Transaction aborted (error -22) Modules linked in: CPU: 0 UID: 0 PID: 9758 Comm: repro.out Not tainted 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [inline] RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611 Call Trace: <TASK> btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705 btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157 btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517 btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708 btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130 btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499 btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628 evict+0x5f4/0xae0 fs/inode.c:837 __dentry_kill+0x209/0x660 fs/dcache.c:670 finish_dput+0xc9/0x480 fs/dcache.c:879 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661 generic_shutdown_super+0x67/0x2c0 fs/super.c:621 kill_anon_super+0x3b/0x70 fs/super.c:1289 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318 task_work_run+0x1d4/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x694/0x22f0 kernel/exit.c:971 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x44f639 Code: Unable to access opcode bytes at 0x44f60f. RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> Since rescue mount options will mark the full fs read-only, there should be no new transaction triggered. But during unmount we will evict all inodes, which can trigger a new transaction, and triggers warnings on a heavily corrupted fs. [CAUSE] Btrfs allows new transaction even on a read-only fs, this is to allow log replay happen even on read-only mounts, just like what ext4/xfs do. However with rescue mount options, the fs is fully read-only and cannot be remounted read-write, thus in that case we should also reject any new transactions. [FIX] If we find the fs has rescue mount options, we should treat the fs as error, so that no new transaction can be started.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: btrfs: reject new transactions if the fs is fully read-only [BUG] There is a bug report where a heavily fuzzed fs is mounted with all rescue mount options, which leads to the following warnings during unmount: BTRFS: Transaction aborted (error -22) Modules linked in: CPU: 0 UID: 0 PID: 9758 Comm: repro.out Not tainted 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [inline] RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611 Call Trace: <TASK> btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705 btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157 btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517 btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708 btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130 btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499 btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628 evict+0x5f4/0xae0 fs/inode.c:837 __dentry_kill+0x209/0x660 fs/dcache.c:670 finish_dput+0xc9/0x480 fs/dcache.c:879 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661 generic_shutdown_super+0x67/0x2c0 fs/super.c:621 kill_anon_super+0x3b/0x70 fs/super.c:1289 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318 task_work_run+0x1d4/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x694/0x22f0 kernel/exit.c:971 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x44f639 Code: Unable to access opcode bytes at 0x44f60f. RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> Since rescue mount options will mark the full fs read-only, there should be no new transaction triggered. But during unmount we will evict all inodes, which can trigger a new transaction, and triggers warnings on a heavily corrupted fs. [CAUSE] Btrfs allows new transaction even on a read-only fs, this is to allow log replay happen even on read-only mounts, just like what ext4/xfs do. However with rescue mount options, the fs is fully read-only and cannot be remounted read-write, thus in that case we should also reject any new transactions. [FIX] If we find the fs has rescue mount options, we should treat the fs as error, so that no new transaction can be started.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-0462Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, die möglicherweise zu einer Denial-of-Service- Bedingung führen oder eine Speicherbeschädigung verursachen können.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260225Security Bulletin 25 Feb 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 25 Feb 2026, published on 25 February 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0831Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-23193 Référence CVE CVE-2026-23198 https://www.cve.org/CVERecord?id=CVE-2026-23198 Référence CVE CVE-2026-23200 https://www.cve.org/CVERecord?id=CVE-2026-23200 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23220 https://www.cve.org/CVERecord?id=CVE-2026-23220 Référence CVE CVE-2026-23221 https://www.cve.org/CVERecord?id=CVE-2026-23221 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23228 https://www.cve.org/CVERecord?id=CVE-2026-23228 Référence CVE CVE-2026-23229 https://www.cve.org/CVERecord?id=CVE-2026-23229 Référence CVE CVE-2026-23230 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0787Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-23191 Référence CVE CVE-2026-23193 https://www.cve.org/CVERecord?id=CVE-2026-23193 Référence CVE CVE-2026-23198 https://www.cve.org/CVERecord?id=CVE-2026-23198 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23231 https://www.cve.org/CVERecord?id=CVE-2026-23231 Référence CVE CVE-2026-23254 https://www.cve.org/CVERecord?id=CVE-2026-23254 Référence CVE CVE-2026-23256 https://www.cve.org/CVERecord?id=CVE-2026-23256 Référence CVE CVE-2026-23257 https://www.cve.org/CVERecord?id=CVE-2026-23257 Référence CVE CVE-2026-23258 https://www.cve.org/CVERecord?id=CVE-2026-23258 Référence CVE CVE-2026-23260 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0746Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-23198 Référence CVE CVE-2026-23200 https://www.cve.org/CVERecord?id=CVE-2026-23200 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23254 https://www.cve.org/CVERecord?id=CVE-2026-23254 Référence CVE CVE-2026-23256 https://www.cve.org/CVERecord?id=CVE-2026-23256 Référence CVE CVE-2026-23257 https://www.cve.org/CVERecord?id=CVE-2026-23257 Référence CVE CVE-2026-23258 https://www.cve.org/CVERecord?id=CVE-2026-23258 Référence CVE CVE-2026-23260 https://www.cve.org/CVERecord?id=CVE-2026-23260 Référence CVE CVE-2026-23261 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0663Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-23198 Référence CVE CVE-2026-23200 https://www.cve.org/CVERecord?id=CVE-2026-23200 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23254 https://www.cve.org/CVERecord?id=CVE-2026-23254 Référence CVE CVE-2026-23256 https://www.cve.org/CVERecord?id=CVE-2026-23256 Référence CVE CVE-2026-23257 https://www.cve.org/CVERecord?id=CVE-2026-23257 Référence CVE CVE-2026-23258 https://www.cve.org/CVERecord?id=CVE-2026-23258 Référence CVE CVE-2026-23260 https://www.cve.org/CVERecord?id=CVE-2026-23260 Référence CVE CVE-2026-23261 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0638Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-23198 Référence CVE CVE-2026-23200 https://www.cve.org/CVERecord?id=CVE-2026-23200 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23231 https://www.cve.org/CVERecord?id=CVE-2026-23231 Référence CVE CVE-2026-23254 https://www.cve.org/CVERecord?id=CVE-2026-23254 Référence CVE CVE-2026-23256 https://www.cve.org/CVERecord?id=CVE-2026-23256 Référence CVE CVE-2026-23257 https://www.cve.org/CVERecord?id=CVE-2026-23257 Référence CVE CVE-2026-23258 https://www.cve.org/CVERecord?id=CVE-2026-23258 Référence CVE CVE-2026-23260 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0369Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-23191 Référence CVE CVE-2026-23198 https://www.cve.org/CVERecord?id=CVE-2026-23198 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23207 https://www.cve.org/CVERecord?id=CVE-2026-23207 Référence CVE CVE-2026-23208 https://www.cve.org/CVERecord?id=CVE-2026-23208 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23210 https://www.cve.org/CVERecord?id=CVE-2026-23210 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23221 https://www.cve.org/CVERecord?id=CVE-2026-23221 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23229 https://www.cve.org/CVERecord?id=CVE-2026-23229 Référence CVE CVE-2026-23268 https://www.cve.org/CVERecord?id=CVE-2026-23268 Référence CVE CVE-2026-23269 https://www.cve.org/CVERecord?id=CVE-2026-23269 Référence CVE CVE-2026-25702 https://www.cve.org/CVERecord?id=CVE-2026-25702 Gestion détaillée du document le 27 mars 2026 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0329Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-23190 Référence CVE CVE-2026-23191 https://www.cve.org/CVERecord?id=CVE-2026-23191 Référence CVE CVE-2026-23198 https://www.cve.org/CVERecord?id=CVE-2026-23198 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23207 https://www.cve.org/CVERecord?id=CVE-2026-23207 Référence CVE CVE-2026-23208 https://www.cve.org/CVERecord?id=CVE-2026-23208 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23221 https://www.cve.org/CVERecord?id=CVE-2026-23221 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23229 https://www.cve.org/CVERecord?id=CVE-2026-23229 Gestion détaillée du document le 20 mars 2026 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des sy

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0326Multiples vulnérabilités dans les produits VMware

d?id=CVE-2026-23198 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23207 https://www.cve.org/CVERecord?id=CVE-2026-23207 Référence CVE CVE-2026-23208 https://www.cve.org/CVERecord?id=CVE-2026-23208 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23217 https://www.cve.org/CVERecord?id=CVE-2026-23217 Référence CVE CVE-2026-23220 https://www.cve.org/CVERecord?id=CVE-2026-23220 Référence CVE CVE-2026-23221 https://www.cve.org/CVERecord?id=CVE-2026-23221 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23226 https://www.cve.org/CVERecord?id=CVE-2026-23226 Référence CVE CVE-2026-23227 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0316Multiples vulnérabilités dans les produits VMware

d?id=CVE-2026-23198 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23207 https://www.cve.org/CVERecord?id=CVE-2026-23207 Référence CVE CVE-2026-23208 https://www.cve.org/CVERecord?id=CVE-2026-23208 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23212 https://www.cve.org/CVERecord?id=CVE-2026-23212 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23217 https://www.cve.org/CVERecord?id=CVE-2026-23217 Référence CVE CVE-2026-23220 https://www.cve.org/CVERecord?id=CVE-2026-23220 Référence CVE CVE-2026-23221 https://www.cve.org/CVERecord?id=CVE-2026-23221 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23226 https://www.cve.org/CVERecord?id=CVE-2026-23226 Référence CVE CVE-2026-23227 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0192Multiples vulnérabilités dans le noyau Linux de Debian

d?id=CVE-2026-23199 Référence CVE CVE-2026-23200 https://www.cve.org/CVERecord?id=CVE-2026-23200 Référence CVE CVE-2026-23201 https://www.cve.org/CVERecord?id=CVE-2026-23201 Référence CVE CVE-2026-23202 https://www.cve.org/CVERecord?id=CVE-2026-23202 Référence CVE CVE-2026-23204 https://www.cve.org/CVERecord?id=CVE-2026-23204 Référence CVE CVE-2026-23205 https://www.cve.org/CVERecord?id=CVE-2026-23205 Référence CVE CVE-2026-23206 https://www.cve.org/CVERecord?id=CVE-2026-23206 Référence CVE CVE-2026-23209 https://www.cve.org/CVERecord?id=CVE-2026-23209 Référence CVE CVE-2026-23213 https://www.cve.org/CVERecord?id=CVE-2026-23213 Référence CVE CVE-2026-23214 https://www.cve.org/CVERecord?id=CVE-2026-23214 Référence CVE CVE-2026-23215 https://www.cve.org/CVERecord?id=CVE-2026-23215 Référence CVE CVE-2026-23216 https://www.cve.org/CVERecord?id=CVE-2026-23216 Référence CVE CVE-2026-23219 https://www.cve.org/CVERecord?id=CVE-2026-23219 Référence CVE CVE-2026-23220 https://www.cve.org/CVERecord?id=CVE-2026-23220 Référence CVE CVE-2026-23222 https://www.cve.org/CVERecord?id=CVE-2026-23222 Référence CVE CVE-2026-23223 https://www.cve.org/CVERecord?id=CVE-2026-23223 Référence CVE CVE-2026-23224 https://www.cve.org/CVERecord?id=CVE-2026-23224 Référence CVE CVE-2026-23228 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-008027LinuxのLinux Kernelにおける不特定の脆弱性

Linuxカーネルにおいて、以下の脆弱性が修正されました。btrfsのファイルシステムが完全に読み取り専用の場合に、新しいトランザクションが拒否される問題です。[バグ] 多数のファイルシステムがレスキューマウントオプション付きでマウントされた際、アンマウント時に「BTRFS: Transaction aborted (error -22)」という警告が発生するという報告がありました。レスキューマウントオプションはファイルシステム全体を読み取り専用にするため、新しいトランザクションは発生すべきではありません。しかし、アンマウント中にすべてのinodeを追い出そうとすると、新しいトランザクションが始まり、破損が激しいファイルシステムでは警告が表示されてしまいました。[原因] Btrfsはext4やxfsと同様に、読み取り専用マウントでもログの再生を許可しており、そのため新しいトランザクションを許可していました。しかし、レスキューマウントオプションの場合はファイルシステムが完全に読み取り専用であり、読み書き可能にリマウントできません。そのため、新しいトランザクションを拒否する必要があります。[修正] ファイルシステムにレスキューマウントオプションが設定されている場合はエラーとして扱い、新しいトランザクションが開始されないように修正しました。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Linux: 42437a6386ffeaaf200731e73d723ea491f3fe7d < a928eecf030a9a5dc5f5ca98332699f379b91963, 42437a6386ffeaaf200731e73d723ea491f3fe7d < 3228b2eceb6c3d7e237f8a5330113dbd164fb90d, 42437a6386ffeaaf200731e73d723ea491f3fe7d < 1972f44c189c8aacde308fa9284e474c1a5cbd9f, 5.11
Fixed
Linux: < 5.11, 6.12.70 ≤ 6.12.*, 6.18.10 ≤ 6.18.*, 6.19 ≤ *
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 18 Feb 2026 · Last source change 11 May 2026, 22:02 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-8015
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD enriched

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-23214 · cve.blacktree.nl