PT-2026-46025 · Linux · Linux

Published 2026-06-03 · Updated 2026-06-03 · CVE-2026-46262

NVD

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.

Related Identifiers

CVE-2026-46262

Affected Products

Linux

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-46262 · Security Note
• https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e · Note
• https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c · Note
• https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711 · Note
• https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2 · Note
• https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f · Note
• https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a · Note
• https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448 · Note