CVE-2025-38078

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38078
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix race of buffer access at PCM OSS layer 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.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbf Patch
https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455 Patch
https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25 Patch
https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73 Patch
https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470 Patch
https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4 Patch
https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233f Patch
https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4a Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
History

17 Dec 2025, 17:57

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbf - () https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbf - Patch
References () https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455 - () https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455 - Patch
References () https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25 - () https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25 - Patch
References () https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73 - () https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73 - Patch
References () https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470 - () https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470 - Patch
References () https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4 - () https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4 - Patch
References () https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233f - () https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233f - Patch
References () https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4a - () https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4a - Patch
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory
First Time Linux
Debian
Debian debian Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
CWE CWE-362
CPE cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*

03 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html -
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: pcm: Corrección de la ejecución de acceso al búfer en la capa PCM OSS. La capa PCM OSS intenta borrar el búfer con los datos de silencio durante la inicialización (o reconfiguración) de un flujo mediante la llamada explícita a snd_pcm_format_set_silence() con runtime->dma_area. Sin embargo, esto puede generar una UAF, ya que el acceso a runtime->dma_area podría liberarse simultáneamente, ya que se realiza fuera de las operaciones PCM. Para evitarlo, mueva el código al núcleo PCM y ejecútelo dentro del bloqueo de acceso al búfer, de modo que no se modifique durante la operación.

18 Jun 2025, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 10:15

Updated : 2025-12-17 17:57

NVD link : CVE-2025-38078

Mitre link : CVE-2025-38078

CVE.ORG link : CVE-2025-38078

JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')