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CVE-2023-0266

HIGHCISA KEV

7.9

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

CVE Details

CVSS v3.1 Score7.9

SeverityHIGH

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

Attack VectorADJACENT_NETWORK

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published1/30/2023

Last Modified10/24/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorLinux

ProductKernel

Vulnerability NameLinux Kernel Use-After-Free Vulnerability

KEV Date Added2023-03-30

Remediation Due Date2023-04-20

Ransomware UseUnknown

Affected Products

debian:debian_linuxlinux:linux_kernel

Weaknesses (CWE)

CWE-416CWE-416

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(cve-coordination@google.com)

https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e(cve-coordination@google.com)

https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1(cve-coordination@google.com)

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html(cve-coordination@google.com)

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(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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