---
id: CVE-2026-46262
title: 'ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()'
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()


  This reverts commit f51424872760 ("ASoC: fsl_xcvr: fix missing lock in
  fsl_xcvr_mode_put()").


  The origi…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 612ffe1f4f0499b3011f16d06e354a76dae2e2d1 <
    ae5a70e3e87c28edbaf9939cfef1bcbd9615420f
  - >-
    Linux >= 38354c82abe7bcbcd1182a06af89d3cc16d3e2c7 <
    30ffcad5edb56947dccc26f6816ab7a55b21a711
  - >-
    Linux >= 61e007657bf7740d54ca2aadce0fb5997839818e <
    29b2fbe3498da3681a01b34e4a2259f8a1b89448
  - >-
    Linux >= daaf4fe333e0d48b2037cd2270bf1ff8f70d5068 <
    b0f74f5d24fe3c73ef1369a811891198b54c1e8e
  - >-
    Linux >= cab928242853a832ffa7efda270ecfb9efeebb6e <
    9a2a5da002775376498e8814df4a87cd629a3a0c
  - >-
    Linux >= f514248727606b9087bc38a284ff686e0093abf1 <
    0886dc6326c3cc596799c4340d342898301cf52a
  - >-
    Linux >= f514248727606b9087bc38a284ff686e0093abf1 <
    9f16d96e1222391a6b996a1b676bec14fb91e3b2
  - Linux >= 5.15.201 < 5.15.202
  - Linux >= 6.1.164 < 6.1.165
  - Linux >= 6.6.127 < 6.6.128
  - Linux >= 6.12.74 < 6.12.75
  - Linux >= 6.18.13 < 6.18.14
  - Linux 6.19
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:13:08.973644Z'
published: '2026-06-03'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:13:46.776Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-46262'
references:
  - url: 'https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f'
  - url: 'https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711'
  - url: 'https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448'
  - url: 'https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e'
  - url: 'https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c'
  - url: 'https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a'
  - url: 'https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2'
tags:
  - cve.org
epss: 0.00091
epssPercentile: 0.00473
ingestedAt: '2026-11-06T16:57:43.319Z'
---

## Overview

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

ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()

This reverts commit f51424872760 ("ASoC: fsl_xcvr: fix missing lock in fsl_xcvr_mode_put()").

The original patch attempted to acquire the card->controls_rwsem lock in
fsl_xcvr_mode_put(). However, this function is called from the upper ALSA
core function snd_ctl_elem_write(), which already holds the write lock on
controls_rwsem for the whole put operation. So there is no need to simply
hold the lock for fsl_xcvr_activate_ctl() again.

Acquiring the read lock while holding the write lock in the same thread
results in a deadlock and a hung task, as reported by Alexander Stein.

## Affected

- `Linux >= 612ffe1f4f0499b3011f16d06e354a76dae2e2d1 < ae5a70e3e87c28edbaf9939cfef1bcbd9615420f`
- `Linux >= 38354c82abe7bcbcd1182a06af89d3cc16d3e2c7 < 30ffcad5edb56947dccc26f6816ab7a55b21a711`
- `Linux >= 61e007657bf7740d54ca2aadce0fb5997839818e < 29b2fbe3498da3681a01b34e4a2259f8a1b89448`
- `Linux >= daaf4fe333e0d48b2037cd2270bf1ff8f70d5068 < b0f74f5d24fe3c73ef1369a811891198b54c1e8e`
- `Linux >= cab928242853a832ffa7efda270ecfb9efeebb6e < 9a2a5da002775376498e8814df4a87cd629a3a0c`
- `Linux >= f514248727606b9087bc38a284ff686e0093abf1 < 0886dc6326c3cc596799c4340d342898301cf52a`
- `Linux >= f514248727606b9087bc38a284ff686e0093abf1 < 9f16d96e1222391a6b996a1b676bec14fb91e3b2`
- `Linux >= 5.15.201 < 5.15.202`
- `Linux >= 6.1.164 < 6.1.165`
- `Linux >= 6.6.127 < 6.6.128`
- `Linux >= 6.12.74 < 6.12.75`
- `Linux >= 6.18.13 < 6.18.14`
- `Linux 6.19`

## Remediation

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