CVE-2026-53242 In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in…
Description
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Linux 7.1 | premières → < 7.1 | 7.1 |
| Linux | 7.0 | 7.0.13 |
| Linux 6.18 | premières → < 6.18.36 | 6.18.36 |
| Linux 6.12 | premières → < 6.12.94 | 6.12.94 |
| Linux 6.6 | premières → < 6.6.143 | 6.6.143 |
| Linux 6.1 | premières → < 6.1.176 | 6.1.176 |
| Linux 5.10 | premières → < 5.10.259 | 5.10.259 |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions non publiées |
Références
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
Chronologie
- Publiée
- Dernière modification