Description
Race condition in Canonical apport up to and including 2.32.0 allows a local attacker to leak sensitive information via PID-reuse by leveraging namespaces.
When handling a crash, the function `_check_global_pid_and_forward`, which detects if the crashing process resided in a container, was being called before `consistency_checks`, which attempts to detect if the crashing process had been replaced. Because of this, if a process crashed and was quickly replaced with a containerized one, apport could be made to forward the core dump to the container, potentially leaking sensitive information. `consistency_checks` is now being called before `_check_global_pid_and_forward`. Additionally, given that the PID-reuse race condition cannot be reliably detected from userspace alone, crashes are only forwarded to containers if the kernel provided a pidfd, or if the crashing process was unprivileged (i.e., if dump mode == 1).
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Apport | >= 2.20.1, < 2.20.1-0ubuntu2.30+esm5; >= 2.20.9, < 2.20.9-0ubuntu7.29+esm1; >= 2.20.11, < 2.20.11-0ubuntu27.28; >= 2.20.11, < 2.20.11-0ubuntu82.7; >= 2.28.1, < 2.28.1-0ubuntu3.6; >= 2.30.0, < 2.30.0-0ubuntu4.3; >= 2.32.0, < 2.32.0-0ubuntu5.1; >= 2.32.0, < 2.33.0-0ubuntu1; >= 2.20, <= 2.32.0 |
References
- https://ubuntu.com/security/CVE-2025-5054Third Party Advisory
- https://ubuntu.com/security/notices/USN-7545-1Third Party Advisory
- https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txtExploit, Mitigation, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Jun/9
Timeline
- Published
- May 30, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified