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Linux CVE-2026-23406

| EUVDEUVD-2026-17834 HIGH
Out-of-bounds Read (CWE-125)
2026-04-01 416baaa9-dc9f-4396-8d5f-8c081fb06d67 GHSA-56hx-r887-5w6h
Buffer Overflow Information Disclosure Linux Debian
7.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as local low-privilege user
  2. Delivery
    Trigger file open syscall on crafted path
  3. Exploit
    AppArmor invokes aa_dfa_match for policy check
  4. Execution
    Buggy match_char macro advances pointer past buffer
  5. Persist
    Out-of-bounds read discloses kernel memory
  6. Impact
    Leverage memory disclosure for privilege escalation

Vulnerability Assessment

Weakness
CWE
CWE-125
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Exploitation Conditions

Requires authenticated local access with low-privilege user credentials (PR:L). Exploitation occurs during normal file access operations when AppArmor LSM is active and enforcing policies - this is the default configuration on Ubuntu and other AppArmor-enabled distributions. The vulnerability triggers when aa_dfa_match processes file paths against loaded AppArmor profiles containing differential encoding chains in their compiled DFA representations. No special AppArmor policy configuration is required beyond standard profile enforcement. Systems running with AppArmor disabled (apparmor=0 kernel parameter or CONFIG_SECURITY_APPARMOR=n) are not affected. Limiting factors: attack complexity is low (AC:L) as it requires only standard file operations, but local-only attack vector (AV:L) and prerequisite of valid user account substantially constrain exposure compared to remotely exploitable kernel vulnerabilities.
Impact

Multiple risk signals indicate low real-world priority despite CVSS 7.8 rating. EPSS exploitation probability of 0.02% (5th percentile) suggests minimal attacker interest. No confirmed active exploitation (not in CISA KEV) and no public exploit code identified at time of analysis. CVSS vector AV:L/AC:L/PR:L requires local authenticated access with low-privilege user credentials, significantly limiting attack surface compared to network-exposed vulnerabilities. The vulnerability triggers during normal AppArmor file access checks, making it automatable once local access is achieved, but the High confidentiality/integrity/availability impact assumes worst-case memory disclosure or corruption scenarios. Ubuntu priority rating of 'medium' (not 'high') aligns with assessed risk. Patches available across all maintained kernel branches (6.6 LTS, 6.12, 6.18, 6.19, 7.0-rc) indicate vendor confidence in fix completeness. Primary risk is to systems with untrusted local users where AppArmor enforces security boundaries - single-user workstations face minimal risk. No conflicting signals detected; all sources consistently describe local buffer overread without claims of remote or unauthenticated exploitation.
Exploit ScenarioDerived

A local authenticated user with low-privilege credentials opens a file whose path triggers AppArmor policy evaluation. The kernel invokes apparmor_file_open, which calls __aa_path_perm to match the file path against loaded AppArmor profiles using aa_dfa_match. When the DFA traverses differential encoding chains in the compiled policy automaton, the buggy match_char(*str++) macro causes the input pointer to advance multiple times per state transition. The pointer increments beyond the path string's allocated memory boundary, causing KASAN-detectable slab-out-of-bounds reads. An attacker could craft file paths and AppArmor policy patterns to control which memory addresses get dereferenced, potentially disclosing kernel memory contents or triggering exploitable memory corruption.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv2 – Apr 18, 2026

Out-of-bounds memory read in Linux kernel AppArmor DFA matching affects kernel versions since 4.17 due to macro side-effect bug. The match_char() macro evaluates its character parameter multiple times when called with *str++, causing the pointer to advance past buffer boundaries during differential encoding chain traversal. Ubuntu has released patches (USN-8152-1) with fixes available in kernels 6.6.130, 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. EPSS score of 0.02% (5th percentile) indicates very low exploitation probability, and no public exploit or CISA KEV listing exists. CVSS 7.8 reflects local high-privilege impact, but real-world risk is limited to authenticated local users who can trigger AppArmor path permission checks.

Earlier versions of this analysis (1)
v1 Apr 01, 2026 - 09:22 CVSS 7.8

Out-of-bounds read in Linux kernel AppArmor DFA matching allows local attackers to cause memory corruption via malformed input to apparmor_file_open, triggered when the match_char() macro's character parameter is evaluated multiple times during differential encoding chain traversal, causing pointer advancement past buffer boundaries. The vulnerability manifests as a slab-out-of-bounds read detected by KASAN during file open operations and affects all Linux distributions shipping the vulnerable kernel code. No active exploitation in the wild has been confirmed, but the memory corruption vector creates denial-of-service and potential privilege escalation risk for local attackers.

RemediationAI

Upgrade to patched Linux kernel versions: 6.6.130 or later for 6.6.x LTS branch, 6.12.77+ for 6.12.x, 6.18.18+ for 6.18.x, 6.19.8+ for 6.19.x, or 7.0-rc4+ for mainline development kernels. Ubuntu users should apply updates from USN-8152-1 (https://ubuntu.com/security/notices/USN-8152-1) using standard package management. Debian users should monitor security tracker and apply kernel updates when available through apt. Upstream fix commits are available at git.kernel.org stable (see references: b73c1dff8a9d, 5a184f7cbdea, 383b7270faf4, 8756b68edae3, 0510d1ba0976, c7dc56d8b37e, f16f2e5936c0, 1fc94f16098213d). If immediate patching is not feasible, disabling AppArmor enforcement (apparmor=0 kernel parameter) eliminates the vulnerable code path but removes all AppArmor-based mandatory access controls - this trade-off is acceptable only on single-user systems with no untrusted local users, as it degrades overall security posture. No application-layer workarounds exist since the bug is in kernel memory management during LSM hook execution.

Affected VersionsENISA

Linux 074c1cd798cb0b481d7eaa749b64aa416563c053 <b73c1dff8a9d7eeaebabf8097a5b2de192f40913
Linux patch: 6.19.8
Linux patch: 6.12.77
Linux 074c1cd798cb0b481d7eaa749b64aa416563c053 <5a184f7cbdeaad17e16dedf3c17d0cd622edfed8
Linux 4.17
Linux 074c1cd798cb0b481d7eaa749b64aa416563c053 <383b7270faf42564f133134c2fc3c24bbae52615
Linux patch: 0
Linux 074c1cd798cb0b481d7eaa749b64aa416563c053 <8756b68edae37ff546c02091989a4ceab3f20abd
Linux 074c1cd798cb0b481d7eaa749b64aa416563c053 <0510d1ba0976f97f521feb2b75b0572ea5df3ceb
Linux patch: 7.0-rc4
Linux patch: 6.6.130
Linux patch: 6.18.18

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Technical ContextAI · show details

AppArmor implements mandatory access control using Deterministic Finite Automata (DFA) for policy matching. The vulnerable match_char() macro in the DFA traversal code performs differential encoding optimization to compress state transition tables. When the macro receives an expression with side effects like *str++ (pointer increment), C macro expansion causes the increment operation to execute multiple times within the do-while loop that follows differential encoding chains. Each iteration reads a different memory location, advancing the pointer beyond the intended input string boundary. This violates the intended single-character-per-state semantics of DFA matching. The bug was introduced in commit 074c1cd798cb (version 4.17, circa 2018) and affects the aa_dfa_match() function called during file permission checks (__aa_path_perm, apparmor_file_open). The KASAN report confirms slab-out-of-bounds reads at addresses beyond allocated buffer boundaries.

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Severity by source

NVD PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Ubuntu MEDIUM
SUSE 6.1 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch released
Apr 01, 2026 - 14:30 nvd
Patch available
CVE Published
Apr 01, 2026 - 09:16 nvd
HIGH 7.8

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

apparmor: fix side-effect bug in match_char() macro usage

The match_char() macro evaluates its character parameter multiple times when traversing differential encoding chains. When invoked with *str++, the string pointer advances on each iteration of the inner do-while loop, causing the DFA to check different characters at each iteration and therefore skip input characters. This results in out-of-bounds reads when the pointer advances past the input buffer boundary.

[ 94.984676] ============== [ 94.985301] BUG: KASAN: slab-out-of-bounds in aa_dfa_match+0x5ae/0x760 [ 94.985655] Read of size 1 at addr ffff888100342000 by task file/976

[ 94.986319] CPU: 7 UID: 1000 PID: 976 Comm: file Not tainted 6.19.0-rc7-next-20260127 #1 PREEMPT(lazy) [ 94.986322] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.986329] Call Trace: [ 94.986341] <TASK> [ 94.986347] dump_stack_lvl+0x5e/0x80 [ 94.986374] print_report+0xc8/0x270 [ 94.986384] ? aa_dfa_match+0x5ae/0x760 [ 94.986388] kasan_report+0x118/0x150 [ 94.986401] ? aa_dfa_match+0x5ae/0x760 [ 94.986405] aa_dfa_match+0x5ae/0x760 [ 94.986408] __aa_path_perm+0x131/0x400 [ 94.986418] aa_path_perm+0x219/0x2f0 [ 94.986424] apparmor_file_open+0x345/0x570 [ 94.986431] security_file_open+0x5c/0x140 [ 94.986442] do_dentry_open+0x2f6/0x1120 [ 94.986450] vfs_open+0x38/0x2b0 [ 94.986453] ? may_open+0x1e2/0x2b0 [ 94.986466] path_openat+0x231b/0x2b30 [ 94.986469] ? __x64_sys_openat+0xf8/0x130 [ 94.986477] do_file_open+0x19d/0x360 [ 94.986487] do_sys_openat2+0x98/0x100 [ 94.986491] __x64_sys_openat+0xf8/0x130 [ 94.986499] do_syscall_64+0x8e/0x660 [ 94.986515] ? count_memcg_events+0x15f/0x3c0 [ 94.986526] ? srso_alias_return_thunk+0x5/0xfbef5 [ 94.986540] ? handle_mm_fault+0x1639/0x1ef0 [ 94.986551] ? vma_start_read+0xf0/0x320 [ 94.986558] ? srso_alias_return_thunk+0x5/0xfbef5 [ 94.986561] ? srso_alias_return_thunk+0x5/0xfbef5 [ 94.986563] ? fpregs_assert_state_consistent+0x50/0xe0 [ 94.986572] ? srso_alias_return_thunk+0x5/0xfbef5 [ 94.986574] ? arch_exit_to_user_mode_prepare+0x9/0xb0 [ 94.986587] ? srso_alias_return_thunk+0x5/0xfbef5 [ 94.986588] ? irqentry_exit+0x3c/0x590 [ 94.986595] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 94.986597] RIP: 0033:0x7fda4a79c3ea

Fix by extracting the character value before invoking match_char, ensuring single evaluation per outer loop.

Executive ViewAI

Why It Matters

A memory safety defect in the Linux kernel's AppArmor security module (CVE-2026-23406) allows authenticated local users to read out-of-bounds kernel memory, potentially exposing sensitive data or enabling privilege escalation. While the CVSS score is 7.8, the extremely low EPSS percentile (0.02%) and lack of public exploits indicate minimal near-term risk; however, organizations running affected kernel versions should prioritize patching to eliminate a local attack surface in AppArmor-enforced systems.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patch deployment is delayed: restrict local system access to trusted users only; disable AppArmor profiles if operationally feasible during transition; monitor kernel logs for AppArmor denial events that may indicate exploitation attempts; implement process isolation and container security policies to limit local privilege escalation impact.

Threat Intelligence Overview

EPSS Score
0.0%
Top 95% exploitable
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vendor VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
Low

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Related Vulnerabilities in Linux Kernel AppArmor Security Fixes

View all 9
CVE-2026-23404 MEDIUM
5.5
CVE-2026-23411 HIGH
7.8
CVE-2026-23408 HIGH
7.8
CVE-2026-23410 HIGH
7.8
CVE-2026-23407 HIGH
7.8
CVE-2026-23403 MEDIUM
5.5
CVE-2026-23405 MEDIUM
5.5
CVE-2026-23409 MEDIUM
5.5

Same weakness CWE-125 – Out-of-bounds Read

View all
CVE-2014-0160 HIGH POC
7.5
CVE-2016-5198 HIGH POC
8.8
CVE-2025-5777 CRITICAL POC
9.3
CVE-2016-1646 HIGH POC
8.8
CVE-2017-5030 HIGH POC
8.8
CVE-2016-4523 HIGH
7.5
CVE-2024-48456 HIGH POC
7.5
CVE-2024-48457 HIGH POC
7.5

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

Vendor StatusVendor

Ubuntu

Priority: Medium
linux
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noble needs-triage -
questing DNE -
upstream needs-triage -
linux-azure-nvidia
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-azure-nvidia-6.14
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-bluefield
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-azure-edge
Release Status Version
bionic ignored superseded by linux-azure-5.3
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-azure-5.3
linux-fips
Release Status Version
xenial needs-triage -
bionic needs-triage -
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-aws-fips
Release Status Version
bionic needs-triage -
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-azure-fips
Release Status Version
bionic needs-triage -
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp-fips
Release Status Version
bionic needs-triage -
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp
Release Status Version
xenial needs-triage -
bionic ignored superseded by linux-gcp-5.3
focal needs-triage -
jammy needs-triage -
noble needs-triage -
questing needs-triage -
upstream needs-triage -
linux-gcp-4.15
Release Status Version
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp-5.3
Release Status Version
bionic ignored superseded by linux-gcp-5.4
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-5.4
linux-gcp-5.4
Release Status Version
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp-5.8
Release Status Version
focal ignored superseded by linux-gcp-5.11
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-5.11
linux-gcp-5.11
Release Status Version
focal ignored superseded by linux-gcp-5.13
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-5.13
linux-gcp-5.13
Release Status Version
focal ignored superseded by linux-gcp-5.15
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-5.15
linux-gcp-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp-5.19
Release Status Version
jammy ignored superseded by linux-gcp-6.2
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-6.2
linux-gcp-6.2
Release Status Version
jammy ignored superseded by linux-gcp-6.5
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-6.5
linux-gcp-6.5
Release Status Version
jammy ignored superseded by linux-gcp-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-gcp-6.8
linux-gcp-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-gcp-6.11
Release Status Version
jammy DNE -
noble ignored superseded by linux-gcp-6.14
questing DNE -
upstream ignored superseded by linux-gcp-6.14
linux-gcp-6.14
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-gcp-6.17
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-gke
Release Status Version
focal ignored end of kernel support
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-gke-4.15
Release Status Version
bionic ignored superseded by linux-gke-5.0
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-gke-5.0
linux-gke-5.4
Release Status Version
bionic ignored end of kernel support
jammy DNE -
noble DNE -
questing DNE -
upstream ignored end of life
linux-gke-5.15
Release Status Version
focal ignored end of kernel support
jammy DNE -
noble DNE -
questing DNE -
upstream ignored end of life
linux-gkeop
Release Status Version
focal ignored end of kernel support
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-gkeop-5.4
Release Status Version
bionic ignored end of kernel support
jammy DNE -
noble DNE -
questing DNE -
upstream ignored end of life
linux-gkeop-5.15
Release Status Version
focal ignored end of kernel support
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-ibm
Release Status Version
focal needs-triage -
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-ibm-5.4
Release Status Version
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-ibm-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-ibm-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-intel-5.13
Release Status Version
focal ignored end of kernel support
jammy DNE -
noble DNE -
questing DNE -
upstream ignored end of life
linux-intel-iotg
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-intel-iotg-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-iot
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-intel-iot-realtime
Release Status Version
jammy ignored superseded by Ubuntu Pro ppa version
noble DNE -
questing DNE -
upstream needs-triage -
linux-lowlatency
Release Status Version
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-lowlatency-hwe-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-lowlatency-hwe-5.19
Release Status Version
jammy ignored superseded by linux-lowlatency-hwe-6.2
noble DNE -
questing DNE -
upstream ignored superseded by linux-lowlatency-hwe-6.2
linux-lowlatency-hwe-6.2
Release Status Version
jammy ignored superseded by linux-lowlatency-hwe-6.5
noble DNE -
questing DNE -
upstream ignored superseded by linux-lowlatency-hwe-6.5
linux-lowlatency-hwe-6.5
Release Status Version
jammy ignored superseded by linux-lowlatency-hwe-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-lowlatency-hwe-6.8
linux-lowlatency-hwe-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-lowlatency-hwe-6.11
Release Status Version
jammy DNE -
noble ignored replaced by linux-hwe-6.14
questing DNE -
upstream ignored replaced by linux-hwe-6.14
linux-nvidia
Release Status Version
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-nvidia-6.2
Release Status Version
jammy ignored superseded by linux-nvidia-6.5
noble DNE -
questing DNE -
upstream ignored superseded by linux-nvidia-6.5
linux-nvidia-6.5
Release Status Version
jammy ignored superseded by linux-nvidia-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-nvidia-6.8
linux-nvidia-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-nvidia-6.11
Release Status Version
jammy DNE -
noble ignored end of kernel support
questing DNE -
upstream ignored end of kernel support
linux-nvidia-lowlatency
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-nvidia-tegra
Release Status Version
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-nvidia-tegra-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-nvidia-tegra-igx
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-oracle
Release Status Version
xenial needs-triage -
bionic needs-triage -
focal needs-triage -
jammy needs-triage -
noble needs-triage -
questing needs-triage -
upstream needs-triage -
linux-oracle-5.0
Release Status Version
bionic ignored superseded by linux-oracle-5.3
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-5.3
linux-oracle-5.3
Release Status Version
bionic ignored superseded by linux-oracle-5.4
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-5.4
linux-oracle-5.4
Release Status Version
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-oracle-5.8
Release Status Version
focal ignored superseded by linux-oracle-5.11
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-5.11
linux-oracle-5.11
Release Status Version
focal ignored superseded by linux-oracle-5.13
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-5.13
linux-oracle-5.13
Release Status Version
focal ignored superseded by linux-oracle-5.15
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-5.15
linux-oracle-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-oracle-6.5
Release Status Version
jammy ignored superseded by linux-oracle-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-oracle-6.8
linux-oracle-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-oracle-6.14
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-oracle-6.17
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-oem
Release Status Version
bionic ignored replaced by linux-hwe-5.4
jammy DNE -
noble DNE -
questing DNE -
upstream ignored end of life
linux-oem-5.6
Release Status Version
focal ignored superseded by linux-oem-5.10
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-5.10
linux-oem-5.10
Release Status Version
focal ignored superseded by linux-oem-5.13
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-5.13
linux-oem-5.13
Release Status Version
focal ignored superseded by linux-oem-5.14
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-5.14
linux-oem-5.14
Release Status Version
focal ignored replaced by linux-hwe-5.15
jammy DNE -
noble DNE -
questing DNE -
upstream ignored replaced by linux-hwe-5.15
linux-oem-5.17
Release Status Version
jammy ignored superseded by linux-oem-6.1
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-6.1
linux-oem-6.0
Release Status Version
jammy ignored superseded by linux-oem-6.1
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-6.1
linux-oem-6.1
Release Status Version
jammy ignored superseded by linux-oem-6.5
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-6.5
linux-oem-6.5
Release Status Version
jammy ignored superseded by linux-oem-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-oem-6.8
linux-oem-6.8
Release Status Version
jammy DNE -
noble ignored superseded by linux-oem-6.14
questing DNE -
upstream ignored superseded by linux-oem-6.14
linux-oem-6.11
Release Status Version
jammy DNE -
noble ignored superseded by linux-oem-6.14
questing DNE -
upstream ignored superseded by linux-oem-6.14
linux-oem-6.14
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-oem-6.17
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-raspi
Release Status Version
focal needs-triage -
jammy needs-triage -
noble needs-triage -
questing needs-triage -
upstream needs-triage -
linux-raspi2
Release Status Version
focal ignored replaced by linux-raspi
jammy DNE -
noble DNE -
questing DNE -
upstream ignored replaced by linux-raspi
linux-raspi-5.4
Release Status Version
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-raspi-realtime
Release Status Version
jammy DNE -
noble ignored superseded by Ubuntu Pro ppa version
questing DNE -
upstream needs-triage -
linux-realtime
Release Status Version
jammy ignored superseded by Ubuntu Pro ppa version
noble ignored superseded by Ubuntu Pro ppa version
questing needs-triage -
upstream needs-triage -
linux-realtime-6.8
Release Status Version
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-realtime-6.14
Release Status Version
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-riscv
Release Status Version
focal ignored superseded by linux-riscv-5.8
jammy ignored end of kernel support
noble ignored replaced by linux-riscv-6.14
questing needs-triage -
upstream needs-triage -
linux-riscv-5.8
Release Status Version
focal ignored superseded by linux-riscv-5.11
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-riscv-5.11
linux-riscv-5.11
Release Status Version
focal ignored superseded by linux-riscv-5.13
jammy DNE -
noble DNE -
questing DNE -
upstream ignored superseded by linux-riscv-5.13
linux-riscv-5.15
Release Status Version
focal needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
linux-riscv-5.19
Release Status Version
jammy ignored end of kernel support
noble DNE -
questing DNE -
upstream ignored end of life
linux-riscv-6.5
Release Status Version
jammy ignored superseded by linux-riscv-6.8
noble DNE -
questing DNE -
upstream ignored superseded by linux-riscv-6.8
linux-riscv-6.8
Release Status Version
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-riscv-6.14
Release Status Version
jammy DNE -
noble ignored superseded by linux-riscv-6.17
questing DNE -
upstream ignored superseded by linux-riscv-6.17
linux-riscv-6.17
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-starfive-5.19
Release Status Version
jammy ignored end of kernel support
noble DNE -
questing DNE -
upstream ignored end of life
linux-starfive-6.2
Release Status Version
jammy ignored superseded by linux-starfive-6.5
noble DNE -
questing DNE -
upstream ignored superseded by linux-starfive-6.5
linux-starfive-6.5
Release Status Version
jammy ignored end of kernel support
noble DNE -
questing DNE -
upstream ignored end of life
linux-xilinx
Release Status Version
jammy DNE -
noble needs-triage -
questing DNE -
upstream needs-triage -
linux-xilinx-zynqmp
Release Status Version
focal needs-triage -
jammy needs-triage -
noble DNE -
questing DNE -
upstream needs-triage -
linux-realtime-6.17
Release Status Version
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -

Debian

linux
Release Status Fixed Version Urgency
bullseye fixed 5.10.251-1 -
bullseye (security) fixed 5.10.251-1 -
bookworm fixed 6.1.164-1 -
bookworm (security) fixed 6.1.164-1 -
trixie fixed 6.12.74-2 -
trixie (security) fixed 6.12.74-2 -
forky fixed 6.19.8-1 -
sid fixed 6.19.10-1 -
(unstable) fixed 6.19.6-2 -

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7 Fixed

References

Advisories & patches
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-23406 ADVISORY https://ubuntu.com/security/notices/USN-8152-1 ADVISORY https://vuldb.com/vuln/354617 REF https://git.kernel.org/stable/c/0510d1ba0976f97f521feb2b75b0572ea5df3ceb REF https://git.kernel.org/stable/c/1fc94f16098213d01e56c97feed9b3ecf0147a37 REF https://git.kernel.org/stable/c/383b7270faf42564f133134c2fc3c24bbae52615 REF https://git.kernel.org/stable/c/5a184f7cbdeaad17e16dedf3c17d0cd622edfed8 REF https://git.kernel.org/stable/c/8756b68edae37ff546c02091989a4ceab3f20abd REF https://git.kernel.org/stable/c/b73c1dff8a9d7eeaebabf8097a5b2de192f40913 REF https://git.kernel.org/stable/c/c7dc56d8b37eda1396feeec3ab1c7ecee5eae31b REF https://git.kernel.org/stable/c/f16f2e5936c0f5f0d11fdf10d2be3e47e7108e42

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