Bug#1146874: jpeg-xl: CVE-2026-82522

[Salvatore Bonaccorso]

Source: jpeg-xl
Version: 0.11.2-5.1
Severity: important
Tags: security upstream
Forwarded: https://github.com/libjxl/libjxl/pull/4885
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for jpeg-xl.

CVE-2026-82522[0]:
| libjxl before 0.12 contains an integer underflow vulnerability in
| the container box parser that allows remote attackers to inject
| arbitrary metadata by exploiting 64-bit box size truncation to
| size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL
| file causing the decoder to parse attacker-controlled codestream
| bytes as phantom box headers, enabling injection of arbitrary
| metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-82522
    https://www.cve.org/CVERecord?id=CVE-2026-82522
[1] https://github.com/libjxl/libjxl/pull/4885
[2] https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore