kernel/linux.git/sound/core/oss, branch v6.19.12

ALSA: mixer: oss: Add card disconnect checkpoints

2026-03-04T12:20:16+00:00

[ Upstream commit 084d5d44418148662365eced3e126ad1a81ee3e2 ] ALSA OSS mixer layer calls the kcontrol ops rather individually, and pending calls might be not always caught at disconnecting the device. For avoiding the potential UAF scenarios, add sanity checks of the card disconnection at each entry point of OSS mixer accesses. The rwsem is taken just before that check, hence the rest context should be covered by that properly. Link: https://patch.msgid.link/20260209121212.171430-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

ALSA: oss: delete self assignment

2026-02-26T23:01:04+00:00

[ Upstream commit ee1afacc356c84bba4b89e0655ffdcfa84d4f714 ] No need to assign "uctl" to itself. Delete it. Fixes: 55f98ece9939 ("ALSA: oss: Relax __free() variable declarations") Signed-off-by: Dan Carpenter Link: https://patch.msgid.link/aYXvm2YoV2yRimhk@stanley.mountain Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

ALSA: oss: Relax __free() variable declarations

2026-02-26T23:00:56+00:00

[ Upstream commit 55f98ece9939a0ad5f83c6124dd1f00d678f9f46 ] We used to have a variable declaration with __free() initialized with NULL. This was to keep the old coding style rule, but recently it's relaxed and rather recommends to follow the new rule to declare in place of use for __free() -- which avoids potential deadlocks or UAFs with nested cleanups. Although the current code has no bug, per se, let's follow the new standard and move the declaration to the place of assignment (or directly assign the allocated result) instead of NULL initializations. Fixes: a55bc334d3df ("ALSA: pcm_oss: ump: Use automatic cleanup of kfree()") Fixes: 6c40eec521af ("ALSA: mixer_oss: ump: Use automatic cleanup of kfree()") Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20251216140634.171890-5-tiwai@suse.de Signed-off-by: Sasha Levin

ALSA: pcm: Improve the fix for race of buffer access at PCM OSS layer

2026-01-08T07:07:54+00:00

Handle the error code from snd_pcm_buffer_access_lock() in snd_pcm_runtime_buffer_set_silence() function. Found by Alexandros Panagiotou Fixes: 93a81ca06577 ("ALSA: pcm: Fix race of buffer access at PCM OSS layer") Cc: stable@vger.kernel.org # 6.15 Signed-off-by: Jaroslav Kysela Link: https://patch.msgid.link/20260107213642.332954-1-perex@perex.cz Signed-off-by: Takashi Iwai

ALSA: pcm: oss: Use guard() for spin locks

2025-08-27T08:14:20+00:00

Clean up the code using guard() for spin locks. Merely code refactoring, and no behavior change. Link: https://patch.msgid.link/20250827080618.7682-1-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: mixer_oss: Remove deprecated strcpy() function calls

2025-06-23T15:10:32+00:00

Remove the deprecated strcpy() function calls and assign the strings directly to a 'char *' instead. Use 'if/else if' instead of two separate if statements. No functional changes intended. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum Link: https://patch.msgid.link/20250623113855.37031-2-thorsten.blum@linux.dev Signed-off-by: Takashi Iwai

ALSA: pcm: Fix race of buffer access at PCM OSS layer

2025-05-16T08:09:02+00:00

The PCM OSS layer tries to clear the buffer with the silence data at initialization (or reconfiguration) of a stream with the explicit call of snd_pcm_format_set_silence() with runtime->dma_area. But this may lead to a UAF because the accessed runtime->dma_area might be freed concurrently, as it's performed outside the PCM ops. For avoiding it, move the code into the PCM core and perform it inside the buffer access lock, so that it won't be changed during the operation. Reported-by: syzbot+32d4647f551007595173@syzkaller.appspotmail.com Closes: https://lore.kernel.org/68164d8e.050a0220.11da1b.0019.GAE@google.com Cc: Link: https://patch.msgid.link/20250516080817.20068-1-tiwai@suse.de Signed-off-by: Takashi Iwai

Merge tag 'asoc-fix-v6.12-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

2024-10-02T19:29:16+00:00

ASoC: Fixes for v6.12 A bunch of fixes here that came in during the merge window and the first week of release, plus some new quirks and device IDs. There's nothing major here, it's a bit bigger than it might've been due to there being no fixes sent during the merge window due to your vacation.

ALSA: mixer_oss: Remove some incorrect kfree_const() usages

2024-09-30T08:12:08+00:00

"assigned" and "assigned->name" are allocated in snd_mixer_oss_proc_write() using kmalloc() and kstrdup(), so there is no point in using kfree_const() to free these resources. Switch to the more standard kfree() to free these resources. This could avoid a memory leak. Fixes: 454f5ec1d2b7 ("ALSA: mixer: oss: Constify snd_mixer_oss_assign_table definition") Signed-off-by: Christophe JAILLET Link: https://patch.msgid.link/63ac20f64234b7c9ea87a7fa9baf41e8255852f7.1727374631.git.christophe.jaillet@wanadoo.fr Signed-off-by: Takashi Iwai

ALSA: Fix typos in comments across various files

2024-09-30T07:52:31+00:00

This patch fixes typos in comments within the ALSA subsystem. These changes improve code readability without affecting functionality. Signed-off-by: Yu Jiaoliang Link: https://patch.msgid.link/20240924041749.3125507-1-yujiaoliang@vivo.com Signed-off-by: Takashi Iwai