CVE-2025-38078ALSA: pcm: Fix race of buffer access at PCM OSS layer
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c0e05a76fc727929524ef24a19c302e6dd40233f; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8170d8ec4efd0be352c14cb61f374e30fb0c2a25; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 10217da9644ae75cea7330f902c35fc5ba78bbbf; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f3e14d706ec18faf19f5a6e75060e140fea05d4a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 74d90875f3d43f3eff0e9861c4701418795d3455; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before bf85e49aaf3a3c5775ea87369ea5f159c2148db4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before afa56c960fcb4db37f2e3399f28e9402e4e1f470; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 93a81ca0657758b607c3f4ba889ae806be9beb73 | CNA record |
linux linux_kernel linux:linux_kernel | before 5.4.294; from 5.5 before 5.10.238; from 5.11 before 5.15.185; from 5.16 before 6.1.141; from 6.2 before 6.6.93; from 6.7 before 6.12.31; from 6.13 before 6.14.9; 6.15; and 6 more ranges | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
References
- https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233fpatch
- https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25patch
- https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbfpatch
- https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4apatch
- https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455patch
- https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4patch
- https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470patch
- https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlthird-party-advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.