CVE-2026-68229

media: cedrus: skip invalid H.264 reference list entries

State: Published
Severity: 7.1 High
Published: Aug 10, 2026
Updated: Aug 19, 2026
Reserved: Jul 30, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

media: cedrus: skip invalid H.264 reference list entries

Cedrus consumes H.264 ref_pic_list0/ref_pic_list1 entries from the stateless slice control and later uses their indices to look up decode->dpb[] in _cedrus_write_ref_list().

Rejecting such controls in cedrus_try_ctrl() would break existing userspace, since stateless H.264 reference lists may legitimately carry out-of-range indices for missing references. Instead, guard the actual DPB lookup in Cedrus and skip entries whose indices do not fit the fixed V4L2_H264_NUM_DPB_ENTRIES array.

This keeps the fix local to the driver use site and avoids out-of-bounds reads from malformed or unsupported reference list entries.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before a6a109771c51920beb620f30778c29da823cc34cAffected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 7ff6f728a2433b420bb372cb0e8a4eea3f2e1a4bAffected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 1db34683b0fbbcb3bc162380c11514ea0a44e8abAffected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 2ee8327c85b3ac7b532d2d6a1e3a295d5ad7414aAffected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 0af8945fcae742d099f59f3c725eb67235953a31Affected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 9924cb548ee7753a6473997949c3ec48092de0b0Affected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before e53112c2de88982e66c369aee2120d5efd78df30Affected e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 10358ea986c3c85516d1c8206486464f79d36e76Affected
LinuxLinux	5.10Affected before 5.10Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.148 through 6.6.Not affected 6.12.101 through 6.12.Not affected 6.18.42 through 6.18.Not affected 7.1.6 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before a6a109771c51920beb620f30778c29da823cc34cAffected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 7ff6f728a2433b420bb372cb0e8a4eea3f2e1a4bAffected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 1db34683b0fbbcb3bc162380c11514ea0a44e8abAffected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 2ee8327c85b3ac7b532d2d6a1e3a295d5ad7414aAffected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 0af8945fcae742d099f59f3c725eb67235953a31Affected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 9924cb548ee7753a6473997949c3ec48092de0b0Affected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before e53112c2de88982e66c369aee2120d5efd78df30Affected
e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c to before 10358ea986c3c85516d1c8206486464f79d36e76Affected

LinuxLinux

5.10Affected
before 5.10Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.148 through 6.6.*Not affected
6.12.101 through 6.12.*Not affected
6.18.42 through 6.18.*Not affected
7.1.6 through 7.1.*Not affected
7.2 and laterNot affected

References

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