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Vulnerability record · CVE-2022-23608 · published 22 February 2022

CVE-2022-23608: Teluu pjsip use after free vulnerability

Teluu · Pjsip

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario, a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior such as dialog list collision which eventually leading to endless loop. A patch is available in commit db3235953baa56d2fb0e276ca510fefca751643f which will be included in the next release. There are no known workarounds for this issue.

9.8 CVSS 3.1 Critical EPSS 4.0% · top 9.8% CWE-416 · Use after free
9.8CVSS 3.1 base score, v2 7.5
4.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
21References
17 Jun 2026Last modified by NVD

Description

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario, a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior such as dialog list collision which eventually leading to endless loop. A patch is available in commit db3235953baa56d2fb0e276ca510fefca751643f which will be included in the next release. There are no known workarounds for this issue.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/166226/Asterisk-Project-Security-Advisory-AST-2022-005.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2022/Mar/1 Mailing ListPatchThird Party Advisory
https://github.com/pjsip/pjproject/commit/db3235953baa56d2fb0e276ca510fefca751643f PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-ffff-m5fm-qm62 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00040.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://security.gentoo.org/glsa/202210-37 Third Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory
http://packetstormsecurity.com/files/166226/Asterisk-Project-Security-Advisory-AST-2022-005.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2022/Mar/1 Mailing ListPatchThird Party Advisory
https://github.com/pjsip/pjproject/commit/db3235953baa56d2fb0e276ca510fefca751643f PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-ffff-m5fm-qm62 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00040.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
https://security.gentoo.org/glsa/202210-37 Third Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-23608), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.