Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 612ffe1f4f0499b3011f16d06e354a76dae2e2d1 before ae5a70e3e87c28edbaf9939cfef1bcbd9615420f; affected 38354c82abe7bcbcd1182a06af89d3cc16d3e2c7 before 30ffcad5edb56947dccc26f6816ab7a55b21a711; affected 61e007657bf7740d54ca2aadce0fb5997839818e before 29b2fbe3498da3681a01b34e4a2259f8a1b89448; affected daaf4fe333e0d48b2037cd2270bf1ff8f70d5068 before b0f74f5d24fe3c73ef1369a811891198b54c1e8e; affected cab928242853a832ffa7efda270ecfb9efeebb6e before 9a2a5da002775376498e8814df4a87cd629a3a0c; affected f514248727606b9087bc38a284ff686e0093abf1 before 0886dc6326c3cc596799c4340d342898301cf52a; affected f514248727606b9087bc38a284ff686e0093abf1 before 9f16d96e1222391a6b996a1b676bec14fb91e3b2; affected 5.15.201 before 5.15.202; affected 6.1.164 before 6.1.165; affected 6.6.127 before 6.6.128; affected 6.12.74 before 6.12.75; affected 6.18.13 before 6.18.14 |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 5.15.202 through 5.15.*; unaffected 6.1.165 through 6.1.*; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.14 through 6.18.*; unaffected 6.19.4 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f
- https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711
- https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448
- https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e
- https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c
- https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a
- https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2