CVE-2025-5054
Canonical Apport Container Sensitive Information Leak Race Condition
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).
INFO
Published Date :
May 30, 2025, 6:15 p.m.
Last Modified :
Aug. 22, 2025, 7:36 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected packages.
Public PoC/Exploit Available at Github
CVE-2025-5054 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-5054.
| URL | Resource |
|---|---|
| https://ubuntu.com/security/CVE-2025-5054 | Third Party Advisory |
| https://ubuntu.com/security/notices/USN-7545-1 | Third Party Advisory |
| https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt | Exploit Mitigation Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-5054 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-5054
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Contains List of CVE's that I have found (Individual + Collaborative work)
None
Python
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-5054 vulnerability anywhere in the article.
-
seclists.org
Local information disclosure in apport and systemd-coredump
Full Disclosure mailing list archives From: Qualys Security Advisory via Fulldisclosure <fulldisclosure () seclists org> Date: Thu, 29 May 2025 17:26:22 +0000 Qualys Security Advisory Local informatio ... Read more
-
Schneier on Security
New Linux Vulnerabilities
They’re interesting: Tracked as CVE-2025-5054 and CVE-2025-4598, both vulnerabilities are race condition bugs that could enable a local attacker to obtain access to access sensitive information. Tools ... Read more
-
Daily CyberSecurity
Linux Flaws Expose Sensitive Data via Core Dumps
In a recent disclosure, the Qualys Threat Research Unit (TRU) has unearthed two local information disclosure vulnerabilities affecting core crash-reporting mechanisms in major Linux distributions. Ass ... Read more
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Hackread - Latest Cybersecurity, Hacking News, Tech, AI & Crypto
Linux Crash Reporting Flaws (CVE-2025-5054, 4598) Expose Password Hashes
Qualys details CVE-2025-5054 and CVE-2025-4598, critical vulnerabilities affecting Linux crash reporting tools like Apport and systemd-coredump. Learn how to protect your Ubuntu, Red Hat, and Fedora s ... Read more
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Cyber Security News
Critical Linux Vulnerabilities Expose Password Hashes on Millions of Linux Systems Worldwide
Two critical local information-disclosure vulnerabilities affecting millions of Linux systems worldwide, potentially allowing attackers to extract sensitive password data through core dump manipulatio ... Read more
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The Hacker News
New Linux Flaws Allow Password Hash Theft via Core Dumps in Ubuntu, RHEL, Fedora
Two information disclosure flaws have been identified in apport and systemd-coredump, the core dump handlers in Ubuntu, Red Hat Enterprise Linux, and Fedora, according to the Qualys Threat Research Un ... Read more
The following table lists the changes that have been made to the
CVE-2025-5054 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 22, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:* versions up to (including) 2.32.0 Added CPE Configuration OR *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:*:*:*:*:*:*:* Added Reference Type Canonical Ltd.: https://ubuntu.com/security/CVE-2025-5054 Types: Third Party Advisory Added Reference Type Canonical Ltd.: https://ubuntu.com/security/notices/USN-7545-1 Types: Third Party Advisory Added Reference Type Canonical Ltd.: https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt Types: Exploit, Mitigation, Third Party Advisory -
New CVE Received by [email protected]
May. 30, 2025
Action Type Old Value New Value 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). Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-362 Added Reference https://ubuntu.com/security/CVE-2025-5054 Added Reference https://ubuntu.com/security/notices/USN-7545-1 Added Reference https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt