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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.

PUBLISHED Reserved 2025-10-29 | Published 2026-02-11 | Updated 2026-02-11 | Assigner Google




LOW: 2.3CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-908 Use of Uninitialized Resource

Product status

Default status
unaffected

0.7 (semver)
affected

References

github.com/libjxl/libjxl/pull/4495

cve.org (CVE-2025-12474)

nvd.nist.gov (CVE-2025-12474)

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