CVE-2026-46262 Details
Description
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.
A deadlock vulnerability has been identified in the Linux kernel's ASoC fsl_xcvr component, specifically in the handling of control element writes. The issue arises because the function fsl_xcvr_mode_put() attempts to acquire a read lock on the controls_rwsem semaphore. However, this function is called by snd_ctl_elem_write(), which already holds a write lock on the same semaphore. This improper locking sequence creates a deadlock, causing a hung task, as reported by Alexander Stein.
The vulnerability has been addressed in the Linux kernel. Users should upgrade to the latest version where this issue has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a | kernel.org | Patch |
| https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448 | kernel.org | Patch |
| https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c | kernel.org | Patch |
| https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f | kernel.org | Patch |
| https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-667 | Improper Locking | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.19.1, < 6.19.4 5.15.201 6.1.164 6.6.127 6.12.74 6.18.13 6.19 - |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 9, 2026 | Initial Analysis | [email protected] |
| Jun 3, 2026 | New CVE Received | kernel.org |