CVE-2026-28799
PJSIP: Heap use-after-free in PJSIP presence subscription termination handler
Summary
PJSIP: Heap use-after-free in PJSIP presence subscription termination handler
Original description
The description as published by the source.
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-28799 pjproject Fixed in: 2.17-r0
- Debian DEBIAN-CVE-2026-28799 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com