CVE-2023-4622

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

06/09/2023

Last modified:

13/02/2025

Description

A use-after-free vulnerability in the Linux kernel&#39;s af_unix component can be exploited to achieve local privilege escalation.<br /> <br /> The unix_stream_sendpage() function tries to add data to the last skb in the peer&#39;s recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.<br /> <br /> We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.2 (including)	6.1.47 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:12.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-4622

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools