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TI-2026-34903 Aliases CVE-2026-47327GHSA-mc7m-mf78-qjmx

NULL pointer dereference in Ubuntu Linux AppArmor notification handling

Priority LOW 15CWE-476Published · 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 · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00091 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-2026-47327
  2. 2026-10-03 Alias added: GHSA-mc7m-mf78-qjmx

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