Description
libwebsockets contains an out-of-bounds read vulnerability in the LEJP incremental parser in lib/misc/lejp.c. This allows a remote attacker to cause a denial of service
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 | libwebsockets | No fix yet | — |
| Debian 13 | libwebsockets | No fix yet | — |
| Debian 12 | libwebsockets | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libwebsockets | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | libwebsockets | No fix yet | — |
| Ubuntu Pro 24.04 LTS | libwebsockets | No fix yet | — |
| Ubuntu Pro 22.04 LTS | libwebsockets | No fix yet | — |
| Ubuntu Pro 20.04 LTS | libwebsockets | No fix yet | — |
| Ubuntu Pro 18.04 LTS | libwebsockets | No fix yet | — |
| Ubuntu Pro 16.04 LTS | libwebsockets | No fix yet | — |
References
- https://github.com/warmcat/libwebsockets/issues/3664
- https://github.com/warmcat/libwebsockets/commit/736a4a26fce344766bc6618df87bf32193829dd0
- https://github.com/warmcat/libwebsockets/commit/c404a205a98323a7f60e69fae532c5d26bf4a62a
- https://gist.github.com/1820893135-pixel/34d3bc35f74eb0807e73b1df3f15af42