CVE-2026-47331 Use-after-free in Ubuntu Linux AppArmor notification handling
HighCVSS 7.8
EPSS 0.11%
- Published
- Updated
- Exploit status
- No public exploit known
Description
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Canonical Ubuntu Linux | >= 6.8.0, < 6.8.0-124.124 | 6.8.0-124.124 |
| ubuntu/linux(Ubuntu:24.04) | < 6.8.0-124.124 | 6.8.0-124.124 |
| ubuntu/linux-raspi(Ubuntu:24.04) | < 6.8.0-1057.61 | 6.8.0-1057.61 |
| Canonical Ubuntu Linux | = 24.04 | No fix listed |
| Canonical Ubuntu Linux | = 25.10 | No fix listed |
| Canonical Ubuntu Linux | = 26.04 | No fix listed |
References
- git.launchpad.net patch
- Debian Security Tracker CVE-2026-47331 vendor-advisory
- Ubuntu CVE tracker vendor-advisory
- USN-8373-1 vendor-advisory
- USN-8393-1 vendor-advisory
- USN-8440-1 vendor-advisory
- USN-8497-1 vendor-advisory
- USN-8499-1 vendor-advisory
- www.cve.org