What’s Vulnerable › Vulnerabilities

CVE-2026-97575: media: v4l2-ctrls: validate AV1 tile counts

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-ctrls: validate AV1 tile counts The stateless AV1 decoders use tile_info.tile_cols and tile_rows as loop bounds and as indices into the mi_*_starts[] and *_in_sbs_minus_1[] arrays, as the divisor for context_update_tile_id, and their product bounds the per-tile descriptor buffers, but std_validate_compound() does not bound these u8 fields. Reject a V4L2_CTRL_TYPE_AV1_FRAME whose tile_cols or tile_rows exceeds V4L2_AV1_MAX_TILE_COLS / _ROWS, or whose product exceeds V4L2_AV1_MAX_TILE_COUNT. A zero tile count is left to the consuming driver so the zero-initialised control that existing userspace submits is still accepted.

Affected products

• Linux kernel: 6.5 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1afaf85c4990fb1e3168d0d6e99246a65e526f1b
• https://git.kernel.org/stable/c/439058ced617fbb3febc017b9e93bb7387f309e0
• https://git.kernel.org/stable/c/85df9fc79b07f1cc7c953f930ae7e675d0c1e820
• https://git.kernel.org/stable/c/c4c88b5ba85685043d171e0e9c9d00a8cf6a89e8
• https://git.kernel.org/stable/c/c8891da0186fe4c04bccbbd7d84b01a3c941ac7a

Get alerted when CVE-2026-97575 or the next vulnerability affects your stack