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).
Published: 2025-05-30
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-16511 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).
Ubuntu USN Ubuntu USN USN-7545-1 Apport vulnerability
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Fri, 22 Aug 2025 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Canonical ubuntu Linux
CPEs cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:24.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:25.04:*:*:*:*:*:*:*
Vendors & Products Canonical ubuntu Linux

Fri, 30 May 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 30 May 2025 17:45:00 +0000

Type Values Removed Values Added
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).
Title Race Condition in Canonical Apport
Weaknesses CWE-362
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'}


Subscriptions

Canonical Apport Ubuntu Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2025-11-03T20:05:43.609Z

Reserved: 2025-05-21T14:00:55.371Z

Link: CVE-2025-5054

cve-icon Vulnrichment

Updated: 2025-11-03T20:05:43.609Z

cve-icon NVD

Status : Modified

Published: 2025-05-30T18:15:32.670

Modified: 2025-11-03T20:19:15.727

Link: CVE-2025-5054

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-06-24T09:44:16Z

Weaknesses