Description
PJSIP is a free and open source multimedia communication library written in C. Versions 2.12 and prior contain a stack buffer overflow vulnerability that affects PJSUA2 users or users that call the API `pjmedia_sdp_print(), pjmedia_sdp_media_print()`. Applications that do not use PJSUA2 and do not directly call `pjmedia_sdp_print()` or `pjmedia_sdp_media_print()` should not be affected. A patch is available on the `master` branch of the `pjsip/pjproject` GitHub repository. There are currently no known workarounds.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pjsip | pjproject | <= 2.12 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | asterisk | 1:18.14.0~~rc1~dfsg+~cs6.12.40431414-1 | — |
| Debian 12 | ring | 20230206.0~ds1-1 | — |
| Debian 11 | asterisk | 1:16.28.0~dfsg-0+deb11u1 | DSA-5285-1 |
| Debian 11 | ring | 20210112.2.b757bac~ds1-1+deb11u1 | DLA-3887-1 |
| Debian 10 | asterisk | 1:16.28.0~dfsg-0+deb10u1 | DLA-3194-1 |
| Debian 10 | ring | 20190215.1.f152c98~ds1-1+deb10u2 | DLA-3549-1 |
| Debian 9 | pjproject | 2.5.5~dfsg-6+deb9u3 | DLA-2962-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ring | 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 | USN-6422-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | pjproject | No fix yet | — |
| Ubuntu Pro 18.04 LTS | ring | 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 | USN-6422-1 |
| Ubuntu Pro 16.04 LTS | pjproject | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pjproject | 2.12.1-r0 | — |
| Alpine v3.23 | pjproject | 2.12.1-r0 | — |
| Alpine v3.22 | pjproject | 2.12.1-r0 | — |
| Alpine v3.21 | pjproject | 2.12.1-r0 | — |
| Alpine v3.20 | pjproject | 2.12.1-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pjproject | 2.12.1-r0 | — |
| Alpine v3.18 | pjproject | 2.12.1-r0 | — |
| Alpine v3.17 | pjproject | 2.12.1-r0 | — |
| Alpine v3.16 | pjproject | 2.12.1-r0 | — |
Advisories 6
- USN-6422-1 ring vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5285-1 asterisk - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3887-1 ring - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2962-1 pjproject - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3194-1 asterisk - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3549-1 ring - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/pjsip/pjproject/security/advisories/GHSA-f5qg-pqcg-765m
- https://github.com/pjsip/pjproject/commit/560a1346f87aabe126509bb24930106dea292b00
- [debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update mailing-list
- GLSA-202210-37 vendor-advisory
- [debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update mailing-list
- DSA-5285 vendor-advisory
- [debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update mailing-list