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High 7.8Published May 28, 2026
CVE-2026-47331Use-after-free in Ubuntu Linux AppArmor notification handling
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- canonical
- NVD analysis
- Analyzed
- Record last updated
- May 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Canonical Ubuntu Linux canonical:ubuntu_linux (from the name) | from 6.8.0 before 6.8.0-124.124 | CNA record |
canonical ubuntu_linux canonical:ubuntu_linux | 24.04; 25.10; 26.04 | NVD |
References
- https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=5e5cd4759b63363373faf1ce15d1cab3606d6ec8patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.