---
id: CVE-2026-97578
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: verisilicon: rockchip: guard VPU981 AV1 divisor and tile buffer

  rockchip_vpu981_av1_dec_set_tile_info() divides context_update_tile_id by
  tile_info->tile_cols a…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: verisilicon: rockchip: guard VPU981 AV1 divisor and tile buffer

  rockchip_vpu981_av1_dec_set_tile_info() divides context_update_tile_id by
  tile_info->tile_cols a…
severity: high
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 727a400686a2c0d25015c9e44916a59b72882f83 <
    7baa7bb1b784c19170df8c99466fa412040eb431
  - >-
    Linux >= 727a400686a2c0d25015c9e44916a59b72882f83 <
    8f19d869a9f6800547c9ad7ebaf3b94f973dab50
  - >-
    Linux >= 727a400686a2c0d25015c9e44916a59b72882f83 <
    6b7a281a815ae7c5e7bb2aad039ffea9bc933157
  - >-
    Linux >= 727a400686a2c0d25015c9e44916a59b72882f83 <
    b84f6533a8ed2fd7b282fc7ab4b8efadc745a89c
  - Linux 6.5
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:08.567'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97578'
references:
  - url: 'https://git.kernel.org/stable/c/6b7a281a815ae7c5e7bb2aad039ffea9bc933157'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7baa7bb1b784c19170df8c99466fa412040eb431'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8f19d869a9f6800547c9ad7ebaf3b94f973dab50'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b84f6533a8ed2fd7b282fc7ab4b8efadc745a89c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.911Z'
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

media: verisilicon: rockchip: guard VPU981 AV1 divisor and tile buffer

rockchip_vpu981_av1_dec_set_tile_info() divides context_update_tile_id by
tile_info->tile_cols and writes one descriptor per tile into the tile_info
DMA buffer, which holds AV1_MAX_TILES entries; tile_cols and tile_rows
come from the bitstream. Guard the division against a zero tile_cols by
initialising the context-update values to zero and computing them only
when tile_cols is non-zero, and stop the descriptor writes once the
tile_info buffer is full. The tile geometry written to the hardware
registers is left unmodified; the per-dimension and total tile bounds are
enforced by the control validation.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.