Description
A specially-crafted file can cause libjxl's decoder to read pixel data from uninitialized (but allocated) memory.
This can be done by causing the decoder to reference an outside-image-bound area in a subsequent patches. An incorrect optimization causes the decoder to omit populating those areas.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| libjxl | 0.7 – ≤ 0.11.1 | — |
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 14 | jpeg-xl | 0.11.2-0.1 | — |
| Debian 13 | jpeg-xl | 0.11.2-0.1~deb13u1 | — |
| Debian 12 | jpeg-xl | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | graphicsmagick | No fix yet | — |
| Ubuntu 26.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu 25.10 | graphicsmagick | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu Pro 22.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu Pro 20.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu Pro 18.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu Pro 16.04 LTS | graphicsmagick | No fix yet | — |
| Ubuntu Pro 14.04 LTS | graphicsmagick | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libjxl | 0.10.3-150700.4.6.1 | SUSE-SU-2026:0648-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | libjxl | 0.11.2-160000.1.1 | SUSE-SU-2026:20903-1 |
| SLES 16.0 | libjxl | 0.11.2-160000.1.1 | SUSE-SU-2026:20903-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libjxl | 0.11.2-2.1 | openSUSE-SU-2026:10910-1 |
| openSUSE Leap 16.0 | libjxl | 0.11.2-160000.1.1 | openSUSE-SU-2026:20385-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | libjxl | 0.11.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | firefox | 140.7.1-1.amzn2023.0.1 | ALAS2023-2026-1469 |
| Amazon Linux 2023 | libjxl +5 | 1:0.10.3-55.amzn2023 | ALAS2023-2026-1459 |
| Amazon Linux 2 | thunderbird | 140.7.2-1.amzn2.0.1 | ALAS2-2026-3190 |
Advisories 7
- openSUSE-SU-2026:10910-1 libjxl-devel-0.11.2-2.1 on GA media SUSE / openSUSE Security Updates · May 31, 2026
- SUSE-SU-2026:20903-1 Security update for libjxl SUSE / openSUSE Security Updates · Apr 2, 2026
- openSUSE-SU-2026:20385-1 Security update for libjxl SUSE / openSUSE Security Updates · Mar 26, 2026
- ALAS2-2026-3190 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 5, 2026
- ALAS2023-2026-1459 Important: jpegxl security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 5, 2026
- ALAS2023-2026-1469 Important: firefox security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 5, 2026
- SUSE-SU-2026:0648-1 Security update for libjxl SUSE / openSUSE Security Updates · Feb 26, 2026