In the Linux kernel, the following vulnerability has been resolved:
ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync()
The variable codec->regmap is often protected by the lock
codec->regmap_lock when is accessed. However, it is accessed without
holding the lock when is accessed in snd_hdac_regmap_sync():
if (codec->regmap)
In my opinion, this may be a harmful race, because if codec->regmap is
set to NULL right after the condition is checked, a null-pointer
dereference can occur in the called function regcache_sync():
map->lock(map->lock_arg); --> Line 360 in drivers/base/regmap/regcache.c
To fix this possible null-pointer dereference caused by data race, the
mutex_lock coverage is extended to protect the if statement as well as the
function call to regcache_sync().
[ Note: the lack of the regmap_lock itself is harmless for the current
codec driver implementations, as snd_hdac_regmap_sync() is only for
PM runtime resume that is prohibited during the codec probe.
But the change makes the whole code more consistent, so it's merged
as is -- tiwai ]
References
Configurations
Configuration 1 (hide)
|
History
03 Dec 2025, 16:53
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | CWE-476 | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/109f0aaa0b8838a88af9125b79579023539300a7 - Patch | |
| References | () https://git.kernel.org/stable/c/1f4a08fed450db87fbb5ff5105354158bdbe1a22 - Patch | |
| References | () https://git.kernel.org/stable/c/8703b26387e1fa4f8749db98d24c67617b873acb - Patch | |
| References | () https://git.kernel.org/stable/c/9f9eed451176ffcac6b5ba0f6dae1a6b4a1cb0eb - Patch | |
| References | () https://git.kernel.org/stable/c/b32e40379e5b2814de0c4bc199edc2d82317dc07 - Patch | |
| References | () https://git.kernel.org/stable/c/cdd412b528dee6e0851c4735d6676ec138da13a4 - Patch |
Information
Published : 2025-09-16 08:15
Updated : 2025-12-03 16:53
NVD link : CVE-2023-53275
Mitre link : CVE-2023-53275
CVE.ORG link : CVE-2023-53275
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference