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.

CVSS 3.1

4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

CWE

CWE-362

Published

2025-06-18

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• linux:linux_kernel

References

• https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbf
• https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455
• https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25
• https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73
• https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470

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