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TI-2026-34902 Aliases CVE-2026-47326GHSA-rpqm-wqwm-759w

Memory leak in Ubuntu Linux AppArmor large notification response allocation

Priority LOW 23CWE-401Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-401.

Summary

Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to AppArmor notifications. The bug can be triggered by an unprivileged local user. The memory leak could lead to resource exhaustion.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00093 0th percentileScored 2026-11-07
Fix Fixed Ubuntu Linux (Canonical): 6.8.0-124.124, 6.17.0-35.35, 7.0.0-22.22

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CanonicalUbuntu Linux6.8.0 to before 6.8.0-124.124; 6.17.0 to before 6.17.0-35.35; 7.0.0 to before 7.0.0-22.226.8.0-124.124, 6.17.0-35.35, 7.0.0-22.22Patch availableCNA
  • Ubuntu Linux VendorCanonical Affected 6.8.0 to before 6.8.0-124.124; 6.17.0 to before 6.17.0-35.35; 7.0.0 to before 7.0.0-22.22 Fixed in 6.8.0-124.124, 6.17.0-35.35, 7.0.0-22.22 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:*:*:*:*24.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:*25.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:26.04:*:*:*:*:*:*:*26.04VulnerableCanonical
  • cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:*:*:*:* Versions 24.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:* Versions 25.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:26.04:*:*:*:*:*:*:* Versions 26.04 Vulnerable ·Canonical

Remediation

  • Fix · CNA Ubuntu Linux (Canonical) Fixed in 6.8.0-124.124, 6.17.0-35.35, 7.0.0-22.22

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Canonical Ubuntu Linux 6.17.0-35.35, 6.8.0-124.124, 7.0.0-22.22

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2026-34909 Out-of-bounds read in Ubuntu Linux AppArmor notification handlingPriority LOW 35
    • TI-2026-34904 Invalid pointer deallocation in Ubuntu Linux AppArmor notification handlingPriority LOW 26
    • TI-2026-34908 Out-of-bounds read in Ubuntu Linux AppArmor notification handlingPriority LOW 24
    Show all 9 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47326
  2. 2026-10-03 Alias added: GHSA-rpqm-wqwm-759w

References

Patch 1

  • TI-2020-09349 An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-05854 smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-12627 Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than… KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-07471 OS command injection in exim KEVCVSS 3.1CRITICAL 9.8
See all 4120 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences