CVE-2023-0266

7.9 HIGH CISA KEV - Actively Exploited
Published: January 30, 2023 Modified: October 24, 2025
View on NVD

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

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third 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
Source: cve-coordination@google.com
Mailing List Patch Vendor Advisory
https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
Source: cve-coordination@google.com
Patch
https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
Source: cve-coordination@google.com
Patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Source: cve-coordination@google.com
Mailing List Third 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
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch Vendor Advisory
https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.9 / 10.0
EPSS (Exploit Probability)
0.1%
33th percentile
Exploitation Status
Actively Exploited
Remediation due: 2023-04-20

Weaknesses (CWE)

CWE-416 CWE-416

Affected Vendors

linux debian

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