CVE-2026-46262
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()").
Does this matter?
Lower severity and a low EPSS score (0.09%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.09% probability · 1th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52aPatch
- https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448Patch
- https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711Patch
- https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0cPatch
- https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2Patch
- https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420fPatch
- https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.