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Vulnerabilities

Security incident · CVE-2026-47326

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.

Published May 28, 2026 · catalog updated Jun 17, 2026 · ubuntu linux

Check if you run it

No confirmed exploitation is on record for CVE-2026-47326. EPSS is 0.13%. Act only if a listed version of ubuntu linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Advisory link
Affected products
cpe canonical/ubuntu linux

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe canonical/ubuntu linux24.04
  • cpe canonical/ubuntu linux25.10
  • cpe canonical/ubuntu linux26.04

How to fix CVE-2026-47326

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-47326. EPSS is 0.13%. Act only if a listed version of ubuntu linux is installed.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 24.04; canonical/ubuntu linux 25.10; canonical/ubuntu linux 26.04. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-401: Missing Release of Memory after Effective Lifetime. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ubuntu security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 28, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-47326

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-47326

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-47326

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.