Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains on the unlinked substream sleep queue. On the next drain iteration, add_wait_queue adds the entry to a new queue while still linked on the old one, corrupting both lists. A subsequent wake_up dereferences NULL at the func pointer (mapped from the spinlock at offset 0 of the misinterpreted wait_queue_head_t), causing a kernel panic. Replace init_waitqueue_entry/add_wait_queue/conditional remove_wait_queue with init_wait_entry/prepare_to_wait/ finish_wait. init_wait_entry clears prev/next via INIT_LIST_HEAD on each iteration and sets autoremove_wake_function which auto-removes the entry on wake-up. finish_wait safely handles both the already-removed and still-queued cases.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9baee36e8c5443411c4629afabafaff8a46a23fd before cac5bf3500ee6422cf64e0df0b5daeecfed42917; affected f2cb2e0d27fb925c73a78f0ce7d6dbf68d3747c1 before 06eca2235a3fd281dddf25b0a97772b25b5bb573; affected fc71f888994569f87d5bee20b1ac6c9c1e3a7a79 before d842f26a167e77a36f3ed333b9fa99d36ef99fe6; affected 629cf09464cf98670996ea5c191dc9743e6f3f00 before d68b621bb5a48051932f1017a6e1bc9b18f854d0; affected ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432 before b053fcd8912f06c30f932f5b8ec41c72de474695; affected 4a758e9a1f5ed722f83c4dd35f867fe811553bcb before cd98837db15f323463b8df07282ac723bd5c3fed; affected 9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6 before 7c71a9522555ff137a9ca36b15d759ca04d84788; affected 9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6 before 88fe2e3658726cb21ff2dcf9770bf672f9b9d31b; affected c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694; affected 5.10.253 before 5.10.259; affected 6.1.167 before 6.1.176; affected 6.6.130 before 6.6.143; affected 6.12.78 before 6.12.94; affected 6.18.19 before 6.18.36; affected 6.19.9 before 6.20 |
| Linux / Linux | affected 7.0; unaffected 0 before 7.0; unaffected 5.10.259 through 5.10.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/cac5bf3500ee6422cf64e0df0b5daeecfed42917
- https://git.kernel.org/stable/c/06eca2235a3fd281dddf25b0a97772b25b5bb573
- https://git.kernel.org/stable/c/d842f26a167e77a36f3ed333b9fa99d36ef99fe6
- https://git.kernel.org/stable/c/d68b621bb5a48051932f1017a6e1bc9b18f854d0
- https://git.kernel.org/stable/c/b053fcd8912f06c30f932f5b8ec41c72de474695
- https://git.kernel.org/stable/c/cd98837db15f323463b8df07282ac723bd5c3fed
- https://git.kernel.org/stable/c/7c71a9522555ff137a9ca36b15d759ca04d84788
- https://git.kernel.org/stable/c/88fe2e3658726cb21ff2dcf9770bf672f9b9d31b
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.