CVE-2022-49288
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent prealloc proc writes We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent prealloc proc writes We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF or some weird problem. This patch applies the PCM open_mutex to the proc write operation for avoiding the racy proc writes and the PCM stream open (and further operations).
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.28% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/37b12c16beb6f6c1c3c678c1aacbc46525c250f7Patch
- https://git.kernel.org/stable/c/51fce708ab8986a9879ee5da946a2cc120f1036dPatch
- https://git.kernel.org/stable/c/5ed8f8e3c4e59d0396b9ccf2e639711e24295bb6Patch
- https://git.kernel.org/stable/c/69534c48ba8ce552ce383b3dfdb271ffe51820c3Patch
- https://git.kernel.org/stable/c/a21d2f323b5a978dedf9ff1d50f101f85e39b3f2Patch
- https://git.kernel.org/stable/c/b560d670c87d7d40b3cf6949246fa4c7aa65a00aPatch
- https://git.kernel.org/stable/c/e14dca613e0a6ddc2bf6e360f16936a9f865205bPatch
- https://git.kernel.org/stable/c/e7786c445bb67a9a6e64f66ebd6b7215b153ff7dPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.