Vulnerability · Published May 30, 2025 · Assigned by canonical
CVE-2025-5054Race Condition in Canonical Apport
Medium 4.7
In plain English
A medium-severity race condition in Apport from Canonical. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | apport | 2.20.11-0ubuntu82.7 | USN-7545-1 |
| Ubuntu:22.04:LTS | apport | 2.20.11-0ubuntu82.7 | UBUNTU-CVE-2025-5054 |
| Ubuntu:24.04:LTS | apport | 2.28.1-0ubuntu3.6 | USN-7545-1 |
| Ubuntu:24.04:LTS | apport | 2.28.1-0ubuntu3.6 | UBUNTU-CVE-2025-5054 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Apport | 2.20.1 – before 2.20.1-0ubuntu2.30+esm52.20.9 – before 2.20.9-0ubuntu7.29+esm12.20.11 – before 2.20.11-0ubuntu27.282.20.11 – before 2.20.11-0ubuntu82.72.28.1 – before 2.28.1-0ubuntu3.62.30.0 – before 2.30.0-0ubuntu4.32.32.0 – before 2.32.0-0ubuntu5.12.32.0 – before 2.33.0-0ubuntu1 |
Weakness: CWE-362 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N