Description
In libwebp 0.5.1, there is a double free bug in libwebpmux.
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 | libwebp | 0.5.2-1 | — |
| Debian 13 | libwebp | 0.5.2-1 | — |
| Debian 12 | libwebp | 0.5.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mozjs52 | No fix yet | — |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libwebp | 0.5.0-150000.3.17.1 | SUSE-SU-2025:01639-2 |
| SLES 15 SP6 | libwebp | 0.5.0-150000.3.17.1 | SUSE-SU-2025:01639-1 |
Advisories 2
- SUSE-SU-2025:01639-2 Security update for libwebp SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01639-1 Security update for libwebp SUSE / openSUSE Security Updates · Mar 23, 2026