CVE-2023-4622

HIGH

Linux Kernel 4.2-6.1.47 - Use-After-Free in af_unix unix_stream_sendpage

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-4622. PoCs published by 0range1337.

AI-analyzed exploit summary The repository contains a build script for compiling a Linux kernel (v6.4) with specific configurations but lacks any exploit code or technical details related to CVE-2023-4622. It appears to be a placeholder or preparatory step for exploit development.

Description

A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer'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. We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.

Exploits (1)

nomisec STUB 1 stars
by 0range1337 · poc
https://github.com/0range1337/CVE-CVE-2023-4622

The repository contains a build script for compiling a Linux kernel (v6.4) with specific configurations but lacks any exploit code or technical details related to CVE-2023-4622. It appears to be a placeholder or preparatory step for exploit development.

Classification
Stub 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: Linux kernel v6.4
No auth needed
Prerequisites: Linux environment with build tools · Kernel source code
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (6)

Core 6

Scores

CVSS v3 7.8
EPSS 0.0055
EPSS Percentile 41.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (3)
debian/debian_linux 10.0
debian/debian_linux 12.0
linux/linux_kernel 4.2 - 6.1.47
Published Sep 06, 2023
Tracked Since Feb 18, 2026