GHSA-5xf2-f6ch-6p8r

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Source
https://github.com/advisories/GHSA-5xf2-f6ch-6p8r
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-5xf2-f6ch-6p8r/GHSA-5xf2-f6ch-6p8r.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-5xf2-f6ch-6p8r
Aliases
Published
2025-09-22T18:04:20Z
Modified
2026-06-05T14:45:49Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
CodeChecker has a buffer overflow in the log command
Details

Summary

CodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal ldlogger library, which is executed by the CodeChecker log command.

Details

Unsafe usage of strcpy() function in the internal ldlogger library allows attackers to trigger a buffer overflow by supplying crafted inputs from the command line. Specifically, the destination buffer is stack-allocated with a fixed size of 4096 bytes, while strcpy() is called without any length checks, enabling an attacker to overrun the buffer.

PoC

Example script is included below to illustrate how this vulnerability can be exploited.

#!/bin/bash

export CC_LOGGER_DEF_DIRS=1; 
payload=''; for i in $(seq 1 4090); do payload+='A'; done

CodeChecker log -b "/very/long/path/to/$payload/gcc a.c" -o compilation.json

Impact

Any environment where the vulnerable CodeChecker log command is executed with untrusted user input is affected by this vulnerability.

Database specific 
{
    "cwe_ids":  [
        "CWE-121"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2025-09-22T18:04:20Z",
    "nvd_published_at":  "2025-10-28T19:15:41Z",
    "severity":  "MODERATE"
}
References

Affected packages

PyPI / codechecker

Package

Name
codechecker
View open source insights on deps.dev
Purl
pkg:pypi/codechecker

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.26.2

Affected versions

6.*
6.16.0a1
6.16.0
6.17.0
6.18.0
6.18.1
6.18.2
6.19.0
6.19.1
6.20.0rc1
6.20.0
6.21.0rc1
6.21.0
6.22.0rc1
6.22.0
6.22.1
6.22.2
6.22.2.post1
6.23.0rc2
6.23.0
6.23.1
6.24.0
6.24.1
6.24.2
6.24.4
6.25.0
6.25.1
6.26.0
6.26.1

Database specific

last_known_affected_version_range 
"<= 6.26.1"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-5xf2-f6ch-6p8r/GHSA-5xf2-f6ch-6p8r.json"