---
id: CVE-2026-89866
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: chips-media: wave5: Resume device before setting EOS flag

  Setting the EOS flag talks to the firmware via send_firmware_command(),
  which accesses VPU registers
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: chips-media: wave5: Resume device before setting EOS flag

  Setting the EOS flag talks to the firmware via send_firmware_command(),
  which accesses VPU registers. …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9707a6254a8a6b978bde811a44fe07d86c229d1c <
    2215e55ee1e5e69ad53862d968360c5aa63dd3a7
  - >-
    Linux >= 9707a6254a8a6b978bde811a44fe07d86c229d1c <
    a52e6f7923c17a672135b485ffd96fbd72f46267
  - Linux 6.8
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:16:54.743'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89866'
references:
  - url: 'https://git.kernel.org/stable/c/2215e55ee1e5e69ad53862d968360c5aa63dd3a7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a52e6f7923c17a672135b485ffd96fbd72f46267'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.989Z'
epss: 0.00198
epssPercentile: 0.08494
---

## Overview

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

media: chips-media: wave5: Resume device before setting EOS flag

Setting the EOS flag talks to the firmware via send_firmware_command(),
which accesses VPU registers. Both the STREAMOFF path
(wave5_vpu_dec_job_abort()) and the V4L2_DEC_CMD_STOP path
(wave5_vpu_dec_stop()) can run while the device is runtime suspended, so
those register accesses hit powered-down hardware and the SoC raises an
asynchronous SError, panicking the kernel:

  SError Interrupt on CPU3, code 0x00000000bf000000 -- SError
   send_firmware_command+0x2c/0x160 [wave5]
   wave5_vpu_dec_set_bitstream_flag+0x6c/0x80 [wave5]
   wave5_vpu_dec_update_bitstream_buffer+0x80/0xec [wave5]
   wave5_vpu_dec_job_abort+0x44/0xa0 [wave5]
   v4l2_m2m_cancel_job+0x110/0x19c [v4l2_mem2mem]
   v4l2_m2m_streamoff+0x24/0x140 [v4l2_mem2mem]

Resume the device with pm_runtime_resume_and_get() around the EOS
firmware command and release it with pm_runtime_put_autosuspend(),
matching the runtime PM handling already done in
wave5_vpu_dec_device_run().

## Remediation

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