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()"). 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.

• linux linux kernel (>= 6.19.1 < 6.19.4) • linux linux kernel 5.15.201 • linux linux kernel 6.1.164 • linux linux kernel 6.6.127 • linux linux kernel 6.12.74 • linux linux kernel 6.18.13 • linux linux kernel 6.19