Описание
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.
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.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2025-38078
- 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
- https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4
- https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233f
- https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4a
EPSS
CVE ID
Связанные уязвимости
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.
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.
In the Linux kernel, the following vulnerability has been resolved: A ...
EPSS