What is the CVSS score of CVE-2025-5054?

CVE-2025-5054 has a CVSS 3.1 base score of 4.7 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Apport are affected by CVE-2025-5054?

Organizations using Canonical apport should be aware of moderate risk from CVE-2025-5054, a race condition vulnerability rated CVSS 4.7.

Is there a public PoC exploit available for CVE-2025-5054?

Yes, a public proof-of-concept exploit is available for CVE-2025-5054. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-5054?

During next maintenance window: Identify affected systems running Canonical apport and apply vendor patches when convenient. Monitor vendor channels for patch availability.

Apport CVE-2025-5054

MEDIUM

Race Condition (CWE-362)

2025-05-30 security@ubuntu.com

Race Condition Denial Of Service Canonical Apport Ubuntu Linux

4.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.7 MEDIUM

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:44 vuln.today

PoC Detected

Nov 03, 2025 - 20:19 vuln.today

Public exploit code

CVE Published

May 30, 2025 - 18:15 nvd

MEDIUM 4.7

DescriptionCVE.org

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).

AnalysisAI

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. Rated medium severity (CVSS 4.7). Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-362. 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 products include: Canonical Apport, Canonical Ubuntu Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.