Full vulnerability report · 2026

CVE-2026-63970High confidence

vsock/virtio: bind uarg before filling zerocopy skb

Linux · Linux

7.8HighCVSS 3.1

Recommended action

Patch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 20 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product

Operational reassessment

Published severity in operational context

Open reassessment dashboard →

Published severityHighOperational priority:Medium, lowered one band.downgradedsince 5 Aug 2026

Evidence used

No CISA KEV confirmation is currently recorded.
Exploitation requires an existing local or physical foothold with privileges.
EPSS is 0.18% 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

Confirm that the asset runs Linux Linux and falls inside the recorded affected range.
Verify the installed build against the product-specific fixed version after deployment.
Validate exposure, authentication requirements and compensating controls in the actual environment.
Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 20 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Canonical Ubuntu Security: 20 affected package states with no published fix

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.

25 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 20 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 release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`6.12.100-1`	Debian Security Tracker ↗Source updated 7 Oct 2026
Debian bookwormbookworm · source	`linux`	Not affectedDebian marks this release not affected (fixed-version marker 0).	`Not published in this feed`	Debian Security Tracker ↗Source updated 7 Oct 2026
Debian bookwormbookworm · source	`linux-6.12`	Vendor fix publishedDebian records a fixed source-package version for this release.	`6.12.100-1~deb12u1`	Debian Security Tracker ↗Source updated 7 Oct 2026
Debian forkyforky · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`7.0.12-1`	Debian Security Tracker ↗Source updated 7 Oct 2026
Debian sidsid · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`7.0.12-1`	Debian Security Tracker ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-aws`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-fde`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-nvidia`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gcp`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gke`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gkeop`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-ibm`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-lowlatency`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-lowlatency`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-tegra`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oem-6.11`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oracle`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-realtime`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-riscv`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-xilinx`	Affected, 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 feed`	Canonical Ubuntu Security ↗Source updated 7 Oct 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current

CVE-2026-63970 · CSAF 2.0 · revision 13 · interimSUSE Product Security TeamCVE-2026-63970

63 known affected

The vendor explicitly identifies these products as affected by this CVE.

kernel-default as component of SUSE Linux Enterprise Desktop 15 SP7
kernel-default-extra as component of SUSE Linux Enterprise Desktop 15 SP7
kernel-source as component of SUSE Linux Enterprise Desktop 15 SP7
cluster-md-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
dlm-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
gfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-source as component of SUSE Linux Enterprise High Availability Extension 15 SP7
ocfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.0
kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.0
kernel-default as component of SUSE Linux Enterprise Live Patching 15 SP7

Summary: In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: bind uarg before filling zerocopy skb virtio_transport_send_pkt_info() allocates or reuses the zerocopy uarg before entering the send loop, but virtio_transport_alloc_skb() still fills the skb before it inherits that uarg. When fixed-buffer vectored zerocopy hits MAX_SKB_FRAGS, io_sg_from_iter() may partially attach managed frags and return -EMSGSIZE. The rollback path call kfree_skb() to free an skb that carries SKBFL_MANAGED_FRAG_REFS but no uarg, so skb_release_data() falls through to ordinary frag unref. Pass the uarg into virtio_transport_alloc_skb() and bind it immediately before virtio_transport_fill_skb(). This keeps control or no-payload skbs untouched while ensuring success and rollback share one lifetime rule.
Remediation: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Recommended actionPatch only the product branches with a verified fix

Fix availability varies by product

What, why and how

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: bind uarg before filling zerocopy skb virtio_transport_send_pkt_info() allocates or reuses the zerocopy uarg before entering the send loop, but virtio_transport_alloc_skb() still fills the skb before it inherits that uarg. When fixed-buffer vectored zerocopy hits MAX_SKB_FRAGS, io_sg_from_iter() may partially attach managed frags and return -EMSGSIZE. The rollback path call kfree_skb() to free an skb that carries SKBFL_MANAGED_FRAG_REFS but no uarg, so skb_release_data() falls through to ordinary frag unref. Pass the uarg into virtio_transport_alloc_skb() and bind it immediately before virtio_transport_fill_skb(). This keeps control or no-payload skbs untouched while ensuring success and rollback share one lifetime rule.

What

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

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

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

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 → Use After Free → 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: a standard category for the underlying weakness.: CWE-416 ↗
CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.
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:H/I:H/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.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.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.

CWE-416

Official authority intelligence

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

ENISA EUVD · EUVD-2026-45743Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

BSI · German · WID-SEC-2026-2403Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, möglicherweise Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder vertrauliche Informationen offenzulegen.

Official advisory ↗

Cyber Security Agency of Singapore · English · CSA-SB-20260722Security Bulletin 22 Jul 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 22 Jul 2026, published on 22 July 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1252Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-63961 Référence CVE CVE-2026-63962 https://www.cve.org/CVERecord?id=CVE-2026-63962 Référence CVE CVE-2026-63963 https://www.cve.org/CVERecord?id=CVE-2026-63963 Référence CVE CVE-2026-63964 https://www.cve.org/CVERecord?id=CVE-2026-63964 Référence CVE CVE-2026-63965 https://www.cve.org/CVERecord?id=CVE-2026-63965 Référence CVE CVE-2026-63966 https://www.cve.org/CVERecord?id=CVE-2026-63966 Référence CVE CVE-2026-63967 https://www.cve.org/CVERecord?id=CVE-2026-63967 Référence CVE CVE-2026-63968 https://www.cve.org/CVERecord?id=CVE-2026-63968 Référence CVE CVE-2026-63969 https://www.cve.org/CVERecord?id=CVE-2026-63969 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-63971 https://www.cve.org/CVERecord?id=CVE-2026-63971 Référence CVE CVE-2026-63972 https://www.cve.org/CVERecord?id=CVE-2026-63972 Référence CVE CVE-2026-63973 https://www.cve.org/CVERecord?id=CVE-2026-63973 Référence CVE CVE-2026-63974 https://www.cve.org/CVERecord?id=CVE-2026-63974 Référence CVE CVE-2026-63975 https://www.cve.org/CVERecord?id=CVE-2026-63975 Référence CVE CVE-2026-63976 https://www.cve.org/CVERecord?id=CVE-2026-63976 Référence CVE CVE-2026-63977 https://www.cve.org/CVERecord?id=CVE-2026-63977 Référence CVE CVE-2026-63978 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1255Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-63920 Référence CVE CVE-2026-63921 https://www.cve.org/CVERecord?id=CVE-2026-63921 Référence CVE CVE-2026-63922 https://www.cve.org/CVERecord?id=CVE-2026-63922 Référence CVE CVE-2026-63924 https://www.cve.org/CVERecord?id=CVE-2026-63924 Référence CVE CVE-2026-63925 https://www.cve.org/CVERecord?id=CVE-2026-63925 Référence CVE CVE-2026-63926 https://www.cve.org/CVERecord?id=CVE-2026-63926 Référence CVE CVE-2026-63928 https://www.cve.org/CVERecord?id=CVE-2026-63928 Référence CVE CVE-2026-63941 https://www.cve.org/CVERecord?id=CVE-2026-63941 Référence CVE CVE-2026-63969 https://www.cve.org/CVERecord?id=CVE-2026-63969 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-63984 https://www.cve.org/CVERecord?id=CVE-2026-63984 Référence CVE CVE-2026-63985 https://www.cve.org/CVERecord?id=CVE-2026-63985 Référence CVE CVE-2026-63986 https://www.cve.org/CVERecord?id=CVE-2026-63986 Référence CVE CVE-2026-63987 https://www.cve.org/CVERecord?id=CVE-2026-63987 Référence CVE CVE-2026-63990 https://www.cve.org/CVERecord?id=CVE-2026-63990 Référence CVE CVE-2026-63992 https://www.cve.org/CVERecord?id=CVE-2026-63992 Référence CVE CVE-2026-63993 https://www.cve.org/CVERecord?id=CVE-2026-63993 Référence CVE CVE-2026-63995 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1229Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1202Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-63898 Référence CVE CVE-2026-63920 https://www.cve.org/CVERecord?id=CVE-2026-63920 Référence CVE CVE-2026-63923 https://www.cve.org/CVERecord?id=CVE-2026-63923 Référence CVE CVE-2026-63925 https://www.cve.org/CVERecord?id=CVE-2026-63925 Référence CVE CVE-2026-63926 https://www.cve.org/CVERecord?id=CVE-2026-63926 Référence CVE CVE-2026-63928 https://www.cve.org/CVERecord?id=CVE-2026-63928 Référence CVE CVE-2026-63937 https://www.cve.org/CVERecord?id=CVE-2026-63937 Référence CVE CVE-2026-63944 https://www.cve.org/CVERecord?id=CVE-2026-63944 Référence CVE CVE-2026-63969 https://www.cve.org/CVERecord?id=CVE-2026-63969 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-63972 https://www.cve.org/CVERecord?id=CVE-2026-63972 Référence CVE CVE-2026-63973 https://www.cve.org/CVERecord?id=CVE-2026-63973 Référence CVE CVE-2026-63980 https://www.cve.org/CVERecord?id=CVE-2026-63980 Référence CVE CVE-2026-63985 https://www.cve.org/CVERecord?id=CVE-2026-63985 Référence CVE CVE-2026-63990 https://www.cve.org/CVERecord?id=CVE-2026-63990 Référence CVE CVE-2026-63992 https://www.cve.org/CVERecord?id=CVE-2026-63992 Référence CVE CVE-2026-63995 https://www.cve.org/CVERecord?id=CVE-2026-63995 Référence CVE CVE-2026-63996 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1162Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1164Multiples vulnérabilités dans le noyau Linux de SUSE

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1066Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1031Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-53400 Référence CVE CVE-2026-53402 https://www.cve.org/CVERecord?id=CVE-2026-53402 Référence CVE CVE-2026-63797 https://www.cve.org/CVERecord?id=CVE-2026-63797 Référence CVE CVE-2026-63806 https://www.cve.org/CVERecord?id=CVE-2026-63806 Référence CVE CVE-2026-63810 https://www.cve.org/CVERecord?id=CVE-2026-63810 Référence CVE CVE-2026-63815 https://www.cve.org/CVERecord?id=CVE-2026-63815 Référence CVE CVE-2026-63816 https://www.cve.org/CVERecord?id=CVE-2026-63816 Référence CVE CVE-2026-63818 https://www.cve.org/CVERecord?id=CVE-2026-63818 Référence CVE CVE-2026-63829 https://www.cve.org/CVERecord?id=CVE-2026-63829 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-64187 https://www.cve.org/CVERecord?id=CVE-2026-64187 Référence CVE CVE-2026-64189 https://www.cve.org/CVERecord?id=CVE-2026-64189 Référence CVE CVE-2026-64192 https://www.cve.org/CVERecord?id=CVE-2026-64192 Référence CVE CVE-2026-64206 https://www.cve.org/CVERecord?id=CVE-2026-64206 Référence CVE CVE-2026-64227 https://www.cve.org/CVERecord?id=CVE-2026-64227 Référence CVE CVE-2026-64241 https://www.cve.org/CVERecord?id=CVE-2026-64241 Référence CVE CVE-2026-64248 https://www.cve.org/CVERecord?id=CVE-2026-64248 Référence CVE CVE-2026-64250 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0981Multiples vulnérabilités dans le noyau Linux de Debian

ilèges, une atteinte à l'intégrité des données et un déni de service. Solutions Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Debian msg00316 du 31 juillet 2026 https://lists.debian.org/debian-security-announce/2026/msg00316.html Référence CVE CVE-2026-45944 https://www.cve.org/CVERecord?id=CVE-2026-45944 Référence CVE CVE-2026-53005 https://www.cve.org/CVERecord?id=CVE-2026-53005 Référence CVE CVE-2026-53260 https://www.cve.org/CVERecord?id=CVE-2026-53260 Référence CVE CVE-2026-53365 https://www.cve.org/CVERecord?id=CVE-2026-53365 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-64192 https://www.cve.org/CVERecord?id=CVE-2026-64192 Référence CVE CVE-2026-64206 https://www.cve.org/CVERecord?id=CVE-2026-64206 Référence CVE CVE-2026-64227 https://www.cve.org/CVERecord?id=CVE-2026-64227 Référence CVE CVE-2026-64286 https://www.cve.org/CVERecord?id=CVE-2026-64286 Référence CVE CVE-2026-64287 https://www.cve.org/CVERecord?id=CVE-2026-64287 Référence CVE CVE-2026-64307 https://www.cve.org/CVERecord?id=CVE-2026-64307 Référence CVE CVE-2026-64341 https://www.cve.org/CVERecord?id=CVE-2026-64341 Référence CVE CVE-2026-64352 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0954Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0926Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2026-036486LinuxのLinux Kernelにおける解放済みメモリの使用に関する脆弱性

Linuxカーネルにおいて、以下の脆弱性が修正されました。vsock/virtioのzerocopy skbに値を埋める前にuargをバインドするvirtio_transport_send_pkt_info()関数は、送信ループに入る前にzerocopy uargを割り当てるか再利用しますが、virtio_transport_alloc_skb()関数はuargを継承する前にskbに値を埋めていました。固定バッファベクタ型zerocopyがMAX_SKB_FRAGSに到達すると、io_sg_from_iter()関数は一部のmanagedフラグメントを部分的に添付し、-EMSGSIZEを返すことがあります。ロールバックパスでは、uargを持たないがSKBFL_MANAGED_FRAG_REFSフラグを持つskbを解放するためにkfree_skb()関数を呼び出し、skb_release_data()は通常のフラグメントの参照解除処理に渡してしまいます。virtio_transport_alloc_skb()関数にuargを渡し、virtio_transport_fill_skb()関数の直前にすぐバインドするようにしました。これにより、制御パケットやペイロードなしのskbは変更されず、成功時とロールバック時で同じライフタイムルールを共有することが保証されます。

Official advisory ↗

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: kernel-default as component of SUSE Linux Enterprise Desktop 15 SP7
kernel-default-extra as component of SUSE Linux Enterprise Desktop 15 SP7
kernel-source as component of SUSE Linux Enterprise Desktop 15 SP7
cluster-md-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
dlm-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
gfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-source as component of SUSE Linux Enterprise High Availability Extension 15 SP7
ocfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.0
kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.0
kernel-default as component of SUSE Linux Enterprise Live Patching 15 SP7
kernel-default-livepatch as component of SUSE Linux Enterprise Live Patching 15 SP7
kernel-default-livepatch-devel as component of SUSE Linux Enterprise Live Patching 15 SP7
kernel-source as component of SUSE Linux Enterprise Live Patching 15 SP7
kernel-default as component of SUSE Linux Enterprise Module for Legacy 15 SP7
kernel-source as component of SUSE Linux Enterprise Module for Legacy 15 SP7
reiserfs-kmp-default as component of SUSE Linux Enterprise Module for Legacy 15 SP7
kernel-default as component of SUSE Linux Enterprise Module for Public Cloud 15 SP7
kernel-source as component of SUSE Linux Enterprise Module for Public Cloud 15 SP7
kernel-default as component of SUSE Linux Enterprise Server 15 SP7
kernel-default-extra as component of SUSE Linux Enterprise Server 15 SP7
kernel-source as component of SUSE Linux Enterprise Server 15 SP7
reiserfs-kmp-default as component of SUSE Linux Enterprise Server 15 SP7
kernel-default as component of SUSE Linux Enterprise Server 16.0
kernel-devel as component of SUSE Linux Enterprise Server 16.0
kernel-macros as component of SUSE Linux Enterprise Server 16.0
kernel-source as component of SUSE Linux Enterprise Server 16.0
kernel-source-vanilla as component of SUSE Linux Enterprise Server 16.0
kernel-default as component of SUSE Linux Enterprise Server for SAP Applications 15 SP7
and 33 more
Fixed: Linux: < 6.7, 6.12.97 ≤ 6.12.*, 6.18.35 ≤ 6.18.*, 7.0.12 ≤ 7.0.*, 7.1 ≤ *
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.

Evidence and provenance

Published 19 Jul 2026 · Last source change 5 Aug 2026, 12:37 UTC · CWE-416 · Use After Free

CVE recordCVE.org · 5.2

CVSS sourceCNA

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-2026-45743

Product sourceVendor CSAF · SUSE Product Security Team

Remediation sourceVendor CSAF · SUSE Product Security Team

CWE sourceNIST NVD

NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

5 Aug 2026, 12:37 UTC
Vendor guidanceAuthoritative vendor guidance changed: added patch: git.kernel.org/1e584c304cfb94a759417130b1fc6d30b30c4cce; added patch: git.kernel.org/5d317573f1d48e76cce5fb6250452b6e4102e0fb; 2 further additions.
Before
remediation: git.kernel.org/72194f65050958e4c8e069adb6c5d89ef81ca197
After
patch: git.kernel.org/1e584c304cfb94a759417130b1fc6d30b30c4cce · patch: git.kernel.org/5d317573f1d48e76cce5fb6250452b6e4102e0fb · patch: git.kernel.org/72194f65050958e4c8e069adb6c5d89ef81ca197 · 2 more references
git.kernel.org ↗
5 Aug 2026, 12:37 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
581512a6dc939ef122e49336626ae159f3b8a345 < 72194f65050958e4c8e069adb6c5d89ef81ca197; 581512a6dc939ef122e49336626ae159f3b8a345 < b62e2b2b4a50953ca952f3cd3f77dd62dc50fd5d; 581512a6dc939ef122e49336626ae159f3b8a345 < 5d317573f1d48e76cce5fb6250452b6e4102e0fb; 581512a6dc939ef122e49336626ae159f3b8a345 < 1e584c304cfb94a759417130b1fc6d30b30c4cce; 6.7 · Fixed: < 6.7; 6.12.97 ≤ 6.12.*; 6.18.35 ≤ 6.18.*; 7.0.12 ≤ 7.0.*; 7.1 ≤ *
After
Linux: 581512a6dc939ef122e49336626ae159f3b8a345 < 72194f65050958e4c8e069adb6c5d89ef81ca197, 581512a6dc939ef122e49336626ae159f3b8a345 < b62e2b2b4a50953ca952f3cd3f77dd62dc50fd5d, 581512a6dc939ef122e49336626ae159f3b8a345 < 5d317573f1d48e76cce5fb6250452b6e4102e0fb, 581512a6dc939ef122e49336626ae159f3b8a345 < 1e584c304cfb94a759417130b1fc6d30b30c4cce, 6.7 · Fixed: Linux: < 6.7, 6.12.97 ≤ 6.12.*, 6.18.35 ≤ 6.18.*, 7.0.12 ≤ 7.0.*, 7.1 ≤ *
CNA ↗

2026-07-19CVE published

2026-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2026-45743↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗

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.

vsock/virtio: bind uarg before filling zerocopy skb

Published severity in operational context

Evidence used

Compensating controls

Verification

Remediation availability differs by product scope

Release-specific package status

Authoritative vendor CSAF and VEX advisories

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

ENISA European Vulnerability Database

EUVD-2026-45743

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication