---
id: CVE-2026-90238
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path

  isp4sd_pwron_and_init() holds ops_mutex via guard(mutex) and, on any
  init failure, jumps to e…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path

  isp4sd_pwron_and_init() holds ops_mutex via guard(mutex) and, on any
  init failure, jumps to e…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3 <
    74669cc3483e9729ca26b4e06a096ccdd607db64
  - >-
    Linux >= 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3 <
    ef46d80a7015269a98c9505b5912a83798799199
  - Linux 7.2
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:19.753'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90238'
references:
  - url: 'https://git.kernel.org/stable/c/74669cc3483e9729ca26b4e06a096ccdd607db64'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ef46d80a7015269a98c9505b5912a83798799199'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.848Z'
epss: 0.00198
epssPercentile: 0.08485
---

## Overview

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

media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path

isp4sd_pwron_and_init() holds ops_mutex via guard(mutex) and, on any
init failure, jumps to err_deinit and calls isp4sd_pwroff_and_deinit().
That helper takes the same ops_mutex, re-acquiring a non-recursive mutex
already held by the current thread, so any init failure deadlocks.

Unwind the error path in stages instead, releasing only what each
failure point acquired. This also avoids the issues that an
unconditional teardown would hit at the earlier failures, such as a
runtime-PM underflow from pm_runtime_resume_and_get() and MMIO access
while the device is unpowered.

## Remediation

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