Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-ctrls: validate HEVC active reference counts HEVC slice parameters are shared stateless V4L2 controls, but the common validation path does not verify the active L0/L1 reference counts before driver-specific code consumes them. The original report came from Cedrus, but the active count bounds are not Cedrus-specific. Validate them in the common HEVC slice control path so stateless HEVC drivers get the same basic guarantees as soon as the control is queued. Do not reject ref_idx_l0/ref_idx_l1 entries here. Existing userspace may use out-of-range sentinel values such as 0xff for missing references, and some hardware can use that information for concealment. Keep this common check limited to the active reference counts.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d395a78db9eabd12633b39e05c80e803543b6590 before 3299c3905f3fb439ebd892658b87bc76c93ae116; affected d395a78db9eabd12633b39e05c80e803543b6590 before 9a998cc1c348769262d433acb7d238c5fac4b2e0; affected d395a78db9eabd12633b39e05c80e803543b6590 before dbaf0e0023e2f9332c5164822def7f80b7d2c5ef; affected d395a78db9eabd12633b39e05c80e803543b6590 before 3068ab802fc98b121dcb451e1f7f4d338ffc7a19; affected d395a78db9eabd12633b39e05c80e803543b6590 before b01df98a6669d2b67d8aed816021b327fd905998; affected d395a78db9eabd12633b39e05c80e803543b6590 before afbe4bc252d90a6f8fad869b06d5430f615f22f9 |
| Linux / Linux | affected 5.14; unaffected 0 before 5.14; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3299c3905f3fb439ebd892658b87bc76c93ae116
- https://git.kernel.org/stable/c/9a998cc1c348769262d433acb7d238c5fac4b2e0
- https://git.kernel.org/stable/c/dbaf0e0023e2f9332c5164822def7f80b7d2c5ef
- https://git.kernel.org/stable/c/3068ab802fc98b121dcb451e1f7f4d338ffc7a19
- https://git.kernel.org/stable/c/b01df98a6669d2b67d8aed816021b327fd905998
- https://git.kernel.org/stable/c/afbe4bc252d90a6f8fad869b06d5430f615f22f9
ADP enrichment
No English description supplied.
No references supplied.