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CVE-2023-0266

nvd nist
Published: Jan 30, 2023Modified: Jun 17, 2026CISA KEV

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7.0
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.0 / Impact: 5.9
Source: 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

Affected (7)

Debian
1 product
Debian Linux
Linux
1 product
Linux Kernel
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 10.0
Configuration B
6 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
From 4.14 to 4.14.303
Linux Kernel
From 4.15 to 4.19.270
Linux Kernel
From 4.20 to 5.4.229
Linux Kernel
From 5.11 to 5.15.88
Linux Kernel
From 5.16 to 6.1.6
Linux Kernel
From 5.5 to 5.10.163

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (9)

Source: cve-coordination@google.com
Mailing ListPatchVendor Advisory
Source: cve-coordination@google.com
Patch
Source: cve-coordination@google.com
Patch
Source: cve-coordination@google.com
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

Timeline

No history available yet.