Skip to content
Fencer Vulns
high 7.8

CVE-2026-47331 json

Use-after-free in Ubuntu Linux AppArmor notification handling

published 2026-05-28 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-32986

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An unprivileged local user could trigger the race condition that can lead to a use-after-free (UAF) and, theoretically, arbitrary code execution.

Patch / fix

  • Canonical Ubuntu Linux 6.8.0-124.124
  • linux Ubuntu 24.04 LTS 6.8.0-124.124
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1057.60
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1060.63
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1055.61
  • linux-ibm Ubuntu 24.04 LTS 6.8.0-1057.58
  • linux-azure Ubuntu 24.04 LTS 6.8.0-1058.64
  • linux-gkeop Ubuntu 24.04 LTS 6.8.0-1042.45
  • linux-raspi Ubuntu 24.04 LTS 6.8.0-1057.61

ubuntu advisories UBUNTU-CVE-2026-47331

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Canonical Ubuntu Linux

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.