CVE-2026-89873
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: v4l2-ctrls: validate HEVC EXT SPS RPS counts
The HEVC SPS control carries the short-term and long-term RPS counts that decoder drivers use to walk the matching EXT SPS dynamic arrays. Reject SPS values that exceed the HEVC limits of 64 short-term sets and 32 long-term references so drivers cannot later index beyond those controls.
Also reject EXT SPS ST RPS entries whose negative or positive picture counts exceed the 16-entry arrays, or whose combined delta-POC count exceeds the HEVC DPB maximum.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c9a59dc2acc72789d5c778af080d1e65af84862c < 30f85a7c59113a8844b276efc010085a34f912e9 | affected |
| Linux | Linux | c9a59dc2acc72789d5c778af080d1e65af84862c < 796b5c6d4f1615d59d5d8fe5a38fae6bfdfe878e | affected |
| Linux | Linux | 7.0 | affected |
| Linux | Linux | 0 < 7.0 | unaffected |
| Linux | Linux | 7.2.5 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/30f85a7c59113a8844b276efc010085a34f912e9
- https://git.kernel.org/stable/c/796b5c6d4f1615d59d5d8fe5a38fae6bfdfe878e
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