Is CVE-2023-0266 actively exploited?

CVE-2023-0266 has no public evidence of in-the-wild exploitation as of 2025-10-24.

What is the CVSS score for CVE-2023-0266?

CVE-2023-0266 has a CVSS score of 7.9 (HIGH severity). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H.

How do I patch CVE-2023-0266?

Patch guidance is available from debian security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-0266.

Fix CVE-2023-0266 - HIGH debian debian linux

Q: Which products are affected by CVE-2023-0266?

7 products: debian debian linux, linux linux kernel, linux linux kernel, linux linux kernel, linux linux kernel, and 2 more.

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

CVSS Metrics

Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
Attack Vector: adjacent network
Complexity: high
Privileges: low
User Action: none
Scope: changed
Confidentiality: low
Integrity: high
Availability: high
Weaknesses: CWE-416 · Use After Free CWE-416 · Use After Free

Metadata

Primary Vendor: DEBIAN
Published: 1/30/2023
Last Modified: 10/24/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

debian : debian_linuxlinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernel

Remediation Guidance

Executive Summary

View on NIST NVD