CVE-2026-47331
Use-after-free in Ubuntu Linux AppArmor notification handling
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 |
| Vendor | canonical |
| Product | ubuntu linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 28, 2026 |
| Last Updated | May 29, 2026 |
Stay Ahead of the Next One
Get instant alerts for canonical ubuntu linux
Be the first to know when new high vulnerabilities affecting canonical ubuntu linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Canonical / Ubuntu Linux
6.8.0 < 6.8.0-124.124
References
Credits
Tristan Madani (@TristanInSec), Talence Security