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Fencer Vulns
medium 5.5

CVE-2026-47326 json

Memory leak in Ubuntu Linux AppArmor large notification response allocation

published 2026-05-28 5 mo ago modified 2026-10-26 14 d ago also EUVD-2026-32981

cvss
5.5
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 0%
public exploits
0
none known

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.

Patch / fix

  • Canonical Ubuntu Linux 6.8.0-124.124, 6.17.0-35.35, 7.0.0-22.22
  • linux Ubuntu 24.04 LTS 6.8.0-124.124
  • linux Ubuntu 25.10 6.17.0-35.35
  • linux Ubuntu 26.04 LTS 7.0.0-22.22
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1057.60
  • linux-aws Ubuntu 25.10 6.17.0-1017.17
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1006.6
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1060.63
  • linux-gcp Ubuntu 25.10 6.17.0-1018.19

ubuntu advisories UBUNTU-CVE-2026-47326

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
partial
Assessed
5 mo ago

Exploit prediction

0.09% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Canonical Ubuntu Linux

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

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.