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Full vulnerability report · 2024
CVE-2021-47402High confidence

net: sched: flower: protect fl_walk() with rcu

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 1 structured product or package state 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 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 0.25% 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: As exposure requiresRemediation target: Within 365 days

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 1 structured product or package state 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.

5 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 1 affected package state 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.5.14.12-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.12-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.12-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.12-1Debian Security Tracker ↗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
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-2021-34407

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

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 1 structured product or package state 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: net: sched: flower: protect fl_walk() with rcu Patch that refactored fl_walk() to use idr_for_each_entry_continue_ul() also removed rcu protection of individual filters which causes following use-after-free when filter is deleted concurrently. Fix fl_walk() to obtain rcu read lock while iterating and taking the filter reference and temporary release the lock while calling arg->fn() callback that can sleep. KASAN trace: [ 352.773640] ================================================================== [ 352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower] [ 352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987 [ 352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2 [ 352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 352.781022] Call Trace: [ 352.781573] dump_stack_lvl+0x46/0x5a [ 352.782332] print_address_description.constprop.0+0x1f/0x140 [ 352.783400] ? fl_walk+0x159/0x240 [cls_flower] [ 352.784292] ? fl_walk+0x159/0x240 [cls_flower] [ 352.785138] kasan_report.cold+0x83/0xdf [ 352.785851] ? fl_walk+0x159/0x240 [cls_flower] [ 352.786587] kasan_check_range+0x145/0x1a0 [ 352.787337] fl_walk+0x159/0x240 [cls_flower] [ 352.788163] ? fl_put+0x10/0x10 [cls_flower] [ 352.789007] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.790102] tcf_chain_dump+0x231/0x450 [ 352.790878] ? tcf_chain_tp_delete_empty+0x170/0x170 [ 352.791833] ? __might_sleep+0x2e/0xc0 [ 352.792594] ? tfilter_notify+0x170/0x170 [ 352.793400] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.794477] tc_dump_tfilter+0x385/0x4b0 [ 352.795262] ? tc_new_tfilter+0x1180/0x1180 [ 352.796103] ? __mod_node_page_state+0x1f/0xc0 [ 352.796974] ? __build_skb_around+0x10e/0x130 [ 352.797826] netlink_dump+0x2c0/0x560 [ 352.798563] ? netlink_getsockopt+0x430/0x430 [ 352.799433] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.800542] __netlink_dump_start+0x356/0x440 [ 352.801397] rtnetlink_rcv_msg+0x3ff/0x550 [ 352.802190] ? tc_new_tfilter+0x1180/0x1180 [ 352.802872] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.803668] ? tc_new_tfilter+0x1180/0x1180 [ 352.804344] ? _copy_from_iter_nocache+0x800/0x800 [ 352.805202] ? kasan_set_track+0x1c/0x30 [ 352.805900] netlink_rcv_skb+0xc6/0x1f0 [ 352.806587] ? rht_deferred_worker+0x6b0/0x6b0 [ 352.807455] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.808324] ? netlink_ack+0x4d0/0x4d0 [ 352.809086] ? netlink_deliver_tap+0x62/0x3d0 [ 352.809951] netlink_unicast+0x353/0x480 [ 352.810744] ? netlink_attachskb+0x430/0x430 [ 352.811586] ? __alloc_skb+0xd7/0x200 [ 352.812349] netlink_sendmsg+0x396/0x680 [ 352.813132] ? netlink_unicast+0x480/0x480 [ 352.813952] ? __import_iovec+0x192/0x210 [ 352.814759] ? netlink_unicast+0x480/0x480 [ 352.815580] sock_sendmsg+0x6c/0x80 [ 352.816299] ____sys_sendmsg+0x3a5/0x3c0 [ 352.817096] ? kernel_sendmsg+0x30/0x30 [ 352.817873] ? __ia32_sys_recvmmsg+0x150/0x150 [ 352.818753] ___sys_sendmsg+0xd8/0x140 [ 352.819518] ? sendmsg_copy_msghdr+0x110/0x110 [ 352.820402] ? ___sys_recvmsg+0xf4/0x1a0 [ 352.821110] ? __copy_msghdr_from_user+0x260/0x260 [ 352.821934] ? _raw_spin_lock+0x81/0xd0 [ 352.822680] ? __handle_mm_fault+0xef3/0x1b20 [ 352.823549] ? rb_insert_color+0x2a/0x270 [ 352.824373] ? copy_page_range+0x16b0/0x16b0 [ 352.825209] ? perf_event_update_userpage+0x2d0/0x2d0 [ 352.826190] ? __fget_light+0xd9/0xf0 [ 352.826941] __sys_sendmsg+0xb3/0x130 [ 352.827613] ? __sys_sendmsg_sock+0x20/0x20 [ 352.828377] ? do_user_addr_fault+0x2c5/0x8a0 [ 352.829184] ? fpregs_assert_state_consistent+0x52/0x60 [ 352.830001] ? exit_to_user_mode_prepare+0x32/0x160 [ 352.830845] do_syscall_64+0x35/0x80 [ 352.831445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 352.832331] RIP: 0033:0x7f7bee973c17 [ ---truncated---

What

In the Linux kernel, the following vulnerability has been resolved: net: sched: flower: protect fl_walk() with rcu Patch that refactored fl_walk() to use idr_for_each_entry_continue_ul() also removed rcu protection of individual filters which causes following use-after-free when filter is deleted concurrently. Fix fl_walk() to obtain rcu read lock while iterating and taking the filter reference and temporary release the lock while calling arg->fn() callback that can sleep. KASAN trace: [ 352.773640] ================================================================== [ 352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower] [ 352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987 [ 352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2 [ 352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 352.781022] Call Trace: [ 352.781573] dump_stack_lvl+0x46/0x5a [ 352.782332] print_address_description.constprop.0+0x1f/0x140 [ 352.783400] ? fl_walk+0x159/0x240 [cls_flower] [ 352.784292] ? fl_walk+0x159/0x240 [cls_flower] [ 352.785138] kasan_report.cold+0x83/0xdf [ 352.785851] ? fl_walk+0x159/0x240 [cls_flower] [ 352.786587] kasan_check_range+0x145/0x1a0 [ 352.787337] fl_walk+0x159/0x240 [cls_flower] [ 352.788163] ? fl_put+0x10/0x10 [cls_flower] [ 352.789007] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.790102] tcf_chain_dump+0x231/0x450 [ 352.790878] ? tcf_chain_tp_delete_empty+0x170/0x170 [ 352.791833] ? __might_sleep+0x2e/0xc0 [ 352.792594] ? tfilter_notify+0x170/0x170 [ 352.793400] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.794477] tc_dump_tfilter+0x385/0x4b0 [ 352.795262] ? tc_new_tfilter+0x1180/0x1180 [ 352.796103] ? __mod_node_page_state+0x1f/0xc0 [ 352.796974] ? __build_skb_around+0x10e/0x130 [ 352.797826] netlink_dump+0x2c0/0x560 [ 352.798563] ? netlink_getsockopt+0x430/0x430 [ 352.799433] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.800542] __netlink_dump_start+0x356/0x440 [ 352.801397] rtnetlink_rcv_msg+0x3ff/0x550 [ 352.802190] ? tc_new_tfilter+0x1180/0x1180 [ 352.802872] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.803668] ? tc_new_tfilter+0x1180/0x1180 [ 352.804344] ? _copy_from_iter_nocache+0x800/0x800 [ 352.805202] ? kasan_set_track+0x1c/0x30 [ 352.805900] netlink_rcv_skb+0xc6/0x1f0 [ 352.806587] ? rht_deferred_worker+0x6b0/0x6b0 [ 352.807455] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.808324] ? netlink_ack+0x4d0/0x4d0 [ 352.809086] ? netlink_deliver_tap+0x62/0x3d0 [ 352.809951] netlink_unicast+0x353/0x480 [ 352.810744] ? netlink_attachskb+0x430/0x430 [ 352.811586] ? __alloc_skb+0xd7/0x200 [ 352.812349] netlink_sendmsg+0x396/0x680 [ 352.813132] ? netlink_unicast+0x480/0x480 [ 352.813952] ? __import_iovec+0x192/0x210 [ 352.814759] ? netlink_unicast+0x480/0x480 [ 352.815580] sock_sendmsg+0x6c/0x80 [ 352.816299] ____sys_sendmsg+0x3a5/0x3c0 [ 352.817096] ? kernel_sendmsg+0x30/0x30 [ 352.817873] ? __ia32_sys_recvmmsg+0x150/0x150 [ 352.818753] ___sys_sendmsg+0xd8/0x140 [ 352.819518] ? sendmsg_copy_msghdr+0x110/0x110 [ 352.820402] ? ___sys_recvmsg+0xf4/0x1a0 [ 352.821110] ? __copy_msghdr_from_user+0x260/0x260 [ 352.821934] ? _raw_spin_lock+0x81/0xd0 [ 352.822680] ? __handle_mm_fault+0xef3/0x1b20 [ 352.823549] ? rb_insert_color+0x2a/0x270 [ 352.824373] ? copy_page_range+0x16b0/0x16b0 [ 352.825209] ? perf_event_update_userpage+0x2d0/0x2d0 [ 352.826190] ? __fget_light+0xd9/0xf0 [ 352.826941] __sys_sendmsg+0xb3/0x130 [ 352.827613] ? __sys_sendmsg_sock+0x20/0x20 [ 352.828377] ? do_user_addr_fault+0x2c5/0x8a0 [ 352.829184] ? fpregs_assert_state_consistent+0x52/0x60 [ 352.830001] ? exit_to_user_mode_prepare+0x32/0x160 [ 352.830845] do_syscall_64+0x35/0x80 [ 352.831445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 352.832331] RIP: 0033:0x7f7bee973c17 [ ---truncated---

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

In the Linux kernel, the following vulnerability has been resolved: net: sched: flower: protect fl_walk() with rcu Patch that refactored fl_walk() to use idr_for_each_entry_continue_ul() also removed rcu protection of individual filters which causes following use-after-free when filter is deleted concurrently. Fix fl_walk() to obtain rcu read lock while iterating and taking the filter reference and temporary release the lock while calling arg->fn() callback that can sleep. KASAN trace: [ 352.773640] ================================================================== [ 352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower] [ 352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987 [ 352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2 [ 352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 352.781022] Call Trace: [ 352.781573] dump_stack_lvl+0x46/0x5a [ 352.782332] print_address_description.constprop.0+0x1f/0x140 [ 352.783400] ? fl_walk+0x159/0x240 [cls_flower] [ 352.784292] ? fl_walk+0x159/0x240 [cls_flower] [ 352.785138] kasan_report.cold+0x83/0xdf [ 352.785851] ? fl_walk+0x159/0x240 [cls_flower] [ 352.786587] kasan_check_range+0x145/0x1a0 [ 352.787337] fl_walk+0x159/0x240 [cls_flower] [ 352.788163] ? fl_put+0x10/0x10 [cls_flower] [ 352.789007] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.790102] tcf_chain_dump+0x231/0x450 [ 352.790878] ? tcf_chain_tp_delete_empty+0x170/0x170 [ 352.791833] ? __might_sleep+0x2e/0xc0 [ 352.792594] ? tfilter_notify+0x170/0x170 [ 352.793400] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.794477] tc_dump_tfilter+0x385/0x4b0 [ 352.795262] ? tc_new_tfilter+0x1180/0x1180 [ 352.796103] ? __mod_node_page_state+0x1f/0xc0 [ 352.796974] ? __build_skb_around+0x10e/0x130 [ 352.797826] netlink_dump+0x2c0/0x560 [ 352.798563] ? netlink_getsockopt+0x430/0x430 [ 352.799433] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.800542] __netlink_dump_start+0x356/0x440 [ 352.801397] rtnetlink_rcv_msg+0x3ff/0x550 [ 352.802190] ? tc_new_tfilter+0x1180/0x1180 [ 352.802872] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.803668] ? tc_new_tfilter+0x1180/0x1180 [ 352.804344] ? _copy_from_iter_nocache+0x800/0x800 [ 352.805202] ? kasan_set_track+0x1c/0x30 [ 352.805900] netlink_rcv_skb+0xc6/0x1f0 [ 352.806587] ? rht_deferred_worker+0x6b0/0x6b0 [ 352.807455] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.808324] ? netlink_ack+0x4d0/0x4d0 [ 352.809086] ? netlink_deliver_tap+0x62/0x3d0 [ 352.809951] netlink_unicast+0x353/0x480 [ 352.810744] ? netlink_attachskb+0x430/0x430 [ 352.811586] ? __alloc_skb+0xd7/0x200 [ 352.812349] netlink_sendmsg+0x396/0x680 [ 352.813132] ? netlink_unicast+0x480/0x480 [ 352.813952] ? __import_iovec+0x192/0x210 [ 352.814759] ? netlink_unicast+0x480/0x480 [ 352.815580] sock_sendmsg+0x6c/0x80 [ 352.816299] ____sys_sendmsg+0x3a5/0x3c0 [ 352.817096] ? kernel_sendmsg+0x30/0x30 [ 352.817873] ? __ia32_sys_recvmmsg+0x150/0x150 [ 352.818753] ___sys_sendmsg+0xd8/0x140 [ 352.819518] ? sendmsg_copy_msghdr+0x110/0x110 [ 352.820402] ? ___sys_recvmsg+0xf4/0x1a0 [ 352.821110] ? __copy_msghdr_from_user+0x260/0x260 [ 352.821934] ? _raw_spin_lock+0x81/0xd0 [ 352.822680] ? __handle_mm_fault+0xef3/0x1b20 [ 352.823549] ? rb_insert_color+0x2a/0x270 [ 352.824373] ? copy_page_range+0x16b0/0x16b0 [ 352.825209] ? perf_event_update_userpage+0x2d0/0x2d0 [ 352.826190] ? __fget_light+0xd9/0xf0 [ 352.826941] __sys_sendmsg+0xb3/0x130 [ 352.827613] ? __sys_sendmsg_sock+0x20/0x20 [ 352.828377] ? do_user_addr_fault+0x2c5/0x8a0 [ 352.829184] ? fpregs_assert_state_consistent+0x52/0x60 [ 352.830001] ? exit_to_user_mode_prepare+0x32/0x160 [ 352.830845] do_syscall_64+0x35/0x80 [ 352.831445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 352.832331] RIP: 0033:0x7f7bee973c17 [ ---truncated---

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.

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 → 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
A

Official authority intelligence

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

Cyber Security Agency of Singapore · English · CSA-SB-20240522Security Bulletin 22 May 2024

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 22 May 2024, published on 22 May 2024. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0088Multiples vulnérabilités dans le noyau Linux de SUSE

ord?id=CVE-2021-38160 Référence CVE CVE-2021-4148 https://www.cve.org/CVERecord?id=CVE-2021-4148 Référence CVE CVE-2021-42327 https://www.cve.org/CVERecord?id=CVE-2021-42327 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47202 https://www.cve.org/CVERecord?id=CVE-2021-47202 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47365 https://www.cve.org/CVERecord?id=CVE-2021-47365 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47489 https://www.cve.org/CVERecord?id=CVE-2021-47489 Référence CVE CVE-2021-47491 https://www.cve.org/CVERecord?id=CVE-2021-47491 Référence CVE CVE-2021-47492 https://www.cve.org/CVERecord?id=CVE-2021-47492 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2022-36280 https://www.cve.org/CVERecord?id=CVE-2022-36280 Référence CVE CVE-2022-48632 https://www.cve.org/CVERecord?id=CVE-2022-48632 Référence CVE CVE-2022-48634 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0047Multiples vulnérabilités dans le noyau Linux de SUSE

support/update/announcement/2025/suse-su-20250138-1 Bulletin de sécurité SUSE SUSE-SU-2025:0146-1 du 16 janvier 2025 https://www.suse.com/support/update/announcement/2025/suse-su-20250146-1 Bulletin de sécurité SUSE SUSE-SU-2025:0150-1 du 16 janvier 2025 https://www.suse.com/support/update/announcement/2025/suse-su-20250150-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2022-48686 https://www.cve.org/CVERecord?id=CVE-2022-48686 Référence CVE CVE-2022-48956 https://www.cve.org/CVERecord?id=CVE-2022-48956 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-1079Multiples vulnérabilités dans le noyau Linux de SUSE

pport/update/announcement/2024/suse-su-20244268-1 Bulletin de sécurité SUSE SUSE-SU-2024:4275-1 du 10 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244275-1 Bulletin de sécurité SUSE SUSE-SU-2024:4276-1 du 10 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244276-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-31315 https://www.cve.org/CVERecord?id=CVE-2023-31315 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-1048Multiples vulnérabilités dans le noyau Linux de SUSE

USE-SU-2024:4220-1 du 05 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244220-1 Bulletin de sécurité SUSE SUSE-SU-2024:4221-1 du 05 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244221-1 Référence CVE CVE-2021-46936 https://www.cve.org/CVERecord?id=CVE-2021-46936 Référence CVE CVE-2021-47163 https://www.cve.org/CVERecord?id=CVE-2021-47163 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47416 https://www.cve.org/CVERecord?id=CVE-2021-47416 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47534 https://www.cve.org/CVERecord?id=CVE-2021-47534 Référence CVE CVE-2021-47589 https://www.cve.org/CVERecord?id=CVE-2021-47589 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47612 https://www.cve.org/CVERecord?id=CVE-2021-47612 Référence CVE CVE-2022-3435 https://www.cve.org/CVERecord?id=CVE-2022-3435 Référence CVE CVE-2022-45934 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0955Multiples vulnérabilités dans le noyau Linux de SUSE

sécurité SUSE SUSE-SU-2024:3882-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243882-1 Bulletin de sécurité SUSE SUSE-SU-2024:3884-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243884-1 Bulletin de sécurité SUSE SUSE-SU-2024:3885-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243885-1 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52752 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0938Multiples vulnérabilités dans le noyau Linux de SUSE

support/update/announcement/2024/suse-su-20243840-1 Bulletin de sécurité SUSE SUSE-SU-2024:3838-1 du 31 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243838-1 Bulletin de sécurité SUSE SUSE-SU-2024:3842-1 du 31 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243842-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52752 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0926Multiples vulnérabilités dans le noyau Linux de SUSE

support/update/announcement/2024/suse-su-20243641-1 Bulletin de sécurité SUSE SUSE-SU-2024:3642-1 du 15 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243642-1 Bulletin de sécurité SUSE SUSE-SU-2024:3643-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243643-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52846 https://www.cve.org/CVERecord?id=CVE-2023-52846 Référence CVE CVE-2023-6531 https://www.cve.org/CVERecord?id=CVE-2023-6531 Référence CVE CVE-2023-6546 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0907Multiples vulnérabilités dans le noyau Linux de SUSE

support/update/announcement/2024/suse-su-20243707-1 Bulletin de sécurité SUSE SUSE-SU-2024:3708-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243708-1 Bulletin de sécurité SUSE SUSE-SU-2024:3710-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243710-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52846 https://www.cve.org/CVERecord?id=CVE-2023-52846 Référence CVE CVE-2023-6531 https://www.cve.org/CVERecord?id=CVE-2023-6531 Référence CVE CVE-2023-6546 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0729Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité des données et un contournement de la politique de sécurité.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0717Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47191 Référence CVE CVE-2021-47194 https://www.cve.org/CVERecord?id=CVE-2021-47194 Référence CVE CVE-2021-47197 https://www.cve.org/CVERecord?id=CVE-2021-47197 Référence CVE CVE-2021-47219 https://www.cve.org/CVERecord?id=CVE-2021-47219 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47295 https://www.cve.org/CVERecord?id=CVE-2021-47295 Référence CVE CVE-2021-47388 https://www.cve.org/CVERecord?id=CVE-2021-47388 Référence CVE CVE-2021-47395 https://www.cve.org/CVERecord?id=CVE-2021-47395 Référence CVE CVE-2021-47399 https://www.cve.org/CVERecord?id=CVE-2021-47399 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47403 https://www.cve.org/CVERecord?id=CVE-2021-47403 Référence CVE CVE-2021-47405 https://www.cve.org/CVERecord?id=CVE-2021-47405 Référence CVE CVE-2021-47432 https://www.cve.org/CVERecord?id=CVE-2021-47432 Référence CVE CVE-2021-47438 https://www.cve.org/CVERecord?id=CVE-2021-47438 Référence CVE CVE-2021-47441 https://www.cve.org/CVERecord?id=CVE-2021-47441 Référence CVE CVE-2021-47468 https://www.cve.org/CVERecord?id=CVE-2021-47468 Référence CVE CVE-2021-47501 https://www.cve.org/CVERecord?id=CVE-2021-47501 Référence CVE CVE-2021-47506 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0693Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47197 Référence CVE CVE-2021-47201 https://www.cve.org/CVERecord?id=CVE-2021-47201 Référence CVE CVE-2021-47219 https://www.cve.org/CVERecord?id=CVE-2021-47219 Référence CVE CVE-2021-47275 https://www.cve.org/CVERecord?id=CVE-2021-47275 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47295 https://www.cve.org/CVERecord?id=CVE-2021-47295 Référence CVE CVE-2021-47388 https://www.cve.org/CVERecord?id=CVE-2021-47388 Référence CVE CVE-2021-47395 https://www.cve.org/CVERecord?id=CVE-2021-47395 Référence CVE CVE-2021-47399 https://www.cve.org/CVERecord?id=CVE-2021-47399 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47403 https://www.cve.org/CVERecord?id=CVE-2021-47403 Référence CVE CVE-2021-47405 https://www.cve.org/CVERecord?id=CVE-2021-47405 Référence CVE CVE-2021-47432 https://www.cve.org/CVERecord?id=CVE-2021-47432 Référence CVE CVE-2021-47438 https://www.cve.org/CVERecord?id=CVE-2021-47438 Référence CVE CVE-2021-47441 https://www.cve.org/CVERecord?id=CVE-2021-47441 Référence CVE CVE-2021-47468 https://www.cve.org/CVERecord?id=CVE-2021-47468 Référence CVE CVE-2021-47498 https://www.cve.org/CVERecord?id=CVE-2021-47498 Référence CVE CVE-2021-47501 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0526Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47393 Référence CVE CVE-2021-47394 https://www.cve.org/CVERecord?id=CVE-2021-47394 Référence CVE CVE-2021-47395 https://www.cve.org/CVERecord?id=CVE-2021-47395 Référence CVE CVE-2021-47396 https://www.cve.org/CVERecord?id=CVE-2021-47396 Référence CVE CVE-2021-47397 https://www.cve.org/CVERecord?id=CVE-2021-47397 Référence CVE CVE-2021-47398 https://www.cve.org/CVERecord?id=CVE-2021-47398 Référence CVE CVE-2021-47399 https://www.cve.org/CVERecord?id=CVE-2021-47399 Référence CVE CVE-2021-47400 https://www.cve.org/CVERecord?id=CVE-2021-47400 Référence CVE CVE-2021-47401 https://www.cve.org/CVERecord?id=CVE-2021-47401 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47403 https://www.cve.org/CVERecord?id=CVE-2021-47403 Référence CVE CVE-2021-47404 https://www.cve.org/CVERecord?id=CVE-2021-47404 Référence CVE CVE-2021-47405 https://www.cve.org/CVERecord?id=CVE-2021-47405 Référence CVE CVE-2021-47406 https://www.cve.org/CVERecord?id=CVE-2021-47406 Référence CVE CVE-2021-47407 https://www.cve.org/CVERecord?id=CVE-2021-47407 Référence CVE CVE-2021-47408 https://www.cve.org/CVERecord?id=CVE-2021-47408 Référence CVE CVE-2021-47409 https://www.cve.org/CVERecord?id=CVE-2021-47409 Référence CVE CVE-2021-47410 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0496Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47393 Référence CVE CVE-2021-47394 https://www.cve.org/CVERecord?id=CVE-2021-47394 Référence CVE CVE-2021-47395 https://www.cve.org/CVERecord?id=CVE-2021-47395 Référence CVE CVE-2021-47396 https://www.cve.org/CVERecord?id=CVE-2021-47396 Référence CVE CVE-2021-47397 https://www.cve.org/CVERecord?id=CVE-2021-47397 Référence CVE CVE-2021-47398 https://www.cve.org/CVERecord?id=CVE-2021-47398 Référence CVE CVE-2021-47399 https://www.cve.org/CVERecord?id=CVE-2021-47399 Référence CVE CVE-2021-47400 https://www.cve.org/CVERecord?id=CVE-2021-47400 Référence CVE CVE-2021-47401 https://www.cve.org/CVERecord?id=CVE-2021-47401 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47403 https://www.cve.org/CVERecord?id=CVE-2021-47403 Référence CVE CVE-2021-47404 https://www.cve.org/CVERecord?id=CVE-2021-47404 Référence CVE CVE-2021-47405 https://www.cve.org/CVERecord?id=CVE-2021-47405 Référence CVE CVE-2021-47406 https://www.cve.org/CVERecord?id=CVE-2021-47406 Référence CVE CVE-2021-47407 https://www.cve.org/CVERecord?id=CVE-2021-47407 Référence CVE CVE-2021-47408 https://www.cve.org/CVERecord?id=CVE-2021-47408 Référence CVE CVE-2021-47409 https://www.cve.org/CVERecord?id=CVE-2021-47409 Référence CVE CVE-2021-47410 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-021599Linux 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 の Linux Kernel には、解放済みメモリの使用に関する脆弱性が存在します。

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: d39d714969cda5cbda291402c8c6b1fb1047f42e < 694b0cee7f8546b69a80996a29cb3cf4149c0453, d39d714969cda5cbda291402c8c6b1fb1047f42e < d0d520c19e7ea19ed38dc5797b12397b6ccf9f88, d39d714969cda5cbda291402c8c6b1fb1047f42e < dab4677bdbffa5c8270e79e34e51c89efa0728a0, d39d714969cda5cbda291402c8c6b1fb1047f42e < d5ef190693a7d76c5c192d108e8dec48307b46ee, 5.3
Fixed
Linux: < 5.3, 5.4.151 ≤ 5.4.*, 5.10.71 ≤ 5.10.*, 5.14.10 ≤ 5.14.*, 5.15 ≤ *
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 21 May 2024 · Last source change 5 Aug 2026, 08:47 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-2021-34407
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

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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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-34407↗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.
Free version - for non-commercial use only.CVE-2021-47402 · cve.blacktree.nl