Description
In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mesa3d | Mesa | < 25.3.6, 26.0.0 – < 26.0.1 | 25.3.6 |
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 | mesa | 26.0.1-1 | — |
| Debian 13 | mesa | 25.0.7-2+deb13u1 | — |
| Debian 12 | mesa | 22.3.6-1+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | mesa | 25.2.8-0ubuntu0.25.10.2 | USN-8427-1 |
| Ubuntu 24.04 LTS | mesa | 25.2.8-0ubuntu0.24.04.2 | USN-8427-1 |
| Ubuntu 22.04 LTS | mesa | 23.2.1-1ubuntu3.1~22.04.4 | USN-8427-1 |
| Ubuntu 20.04 LTS | mesa | No fix yet | — |
| Ubuntu 18.04 LTS | mesa | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | mesa | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.2 | Mesa | 20.2.4-150300.59.12.1 | SUSE-SU-2026:1343-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | mesa-libGL +19 | 24.2.6-1268.amzn2023.0.1 | ALAS2023-2026-1623 |
| Amazon Linux 2 | mesa-libGL +17 | 18.3.4-5.amzn2.0.2 | ALAS2-2026-3330 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | mesa | 24.0.1-8 | — |
Advisories 4
- USN-8427-1 mesa vulnerability Ubuntu Security Notices (USN) · Jun 15, 2026
- ALAS2-2026-3330 Important: mesa security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 8, 2026
- ALAS2023-2026-1623 Important: mesa security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 30, 2026
- SUSE-SU-2026:1343-1 Security update for Mesa SUSE / openSUSE Security Updates · Apr 16, 2026