CVE-2026-26203

Name
CVE-2026-26203
Description
PJSIP is a free and open source multimedia communication library. Versions prior to 2.17 have a critical heap buffer underflow vulnerability in PJSIP's H.264 packetizer. The bug occurs when processing malformed H.264 bitstreams without NAL unit start codes, where the packetizer performs unchecked pointer arithmetic that can read from memory located before the allocated buffer. Version 2.17 contains a patch for the issue.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/pjsip/pjproject/commit/5aee54f09d4f91538d55279d7316591b28fded6c
security-advisories@github.com https://github.com/pjsip/pjproject/security/advisories/GHSA-p965-mf7j-gwv8

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:* pjsip >= None < 2.17

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
pjproject edge-main 2.17-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
pjproject 3.24-main 2.17-r0 Natanael Copa <ncopa@alpinelinux.org> fixed