Description
PJSIP is a free and open source multimedia communication library written in the C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In various parts of PJSIP, when error/failure occurs, it is found that the function returns without releasing the currently held locks. This could result in a system deadlock, which cause a denial of service for the users. No release has yet been made which contains the linked fix commit. All versions up to an including 2.11.1 are affected. Users may need to manually apply the patch.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pjsip | pjproject | <= 2.11.1 | — |
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 9 | pjproject | 2.5.5~dfsg-6+deb9u3 | DLA-2962-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ring | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | ring | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pjproject | 2.12-r0 | — |
| Alpine v3.23 | pjproject | 2.12-r0 | — |
| Alpine v3.22 | pjproject | 2.12-r0 | — |
| Alpine v3.21 | pjproject | 2.12-r0 | — |
| Alpine v3.20 | pjproject | 2.12-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pjproject | 2.12-r0 | — |
| Alpine v3.18 | pjproject | 2.12-r0 | — |
| Alpine v3.17 | pjproject | 2.12-r0 | — |
| Alpine v3.16 | pjproject | 2.12-r0 | — |
Advisories 1
- DLA-2962-1 pjproject - security update Debian Security (DSA / DLA) · Mar 9, 2026