CVE-2026-97575 media: v4l2-ctrls: validate AV1 tile counts
Missing validation of AV1 tile counts in the Linux kernel allows attackers to trigger integer overflows, potentially causing crashes or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97575?
CVE-2026-97575 is a high-severity vulnerability in Linux, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-97575?
How do I fix CVE-2026-97575?
Apply the vendor's patch.
Is CVE-2026-97575 being exploited?
There is no known exploitation of CVE-2026-97575 in the wild and no public exploit code.
Sources
Also known as AZL-104780, BELL-CVE-2026-97575, DEBIAN-CVE-2026-97575, GHSA-fhp7-73g8-wj3g, UBUNTU-CVE-2026-97575.