Description

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

Related CPE's

o

debian

debian_linux

10.0

Vulnerable

o

linux

linux_kernel

6

References

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4

Mailing ListPatchVendor Advisory

https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e

Patch

https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1

Patch

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html

Mailing ListThird Party Advisory

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4

Mailing ListPatchVendor Advisory

https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e

Patch

https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1

Patch

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html

Mailing ListThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266

US Government Resource

Weaknesses

[email protected]

Secondary
CWE-416

[email protected]

Primary
CWE-416

CVSS impact metrics

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

7.9 · High

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2023-01-30T13:15:10.500Z

3 years ago

Last modified

2025-10-24T11:54:46.493Z

5 months ago