CVE-2023-4611

Name: CVE-2023-4611
Creator: NVD / NIST
Published: 2023-08-29T22:15:09.397+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2023-4611 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. A use-after-free flaw was found in mm/mempolicy.c in the memory management subsystem in the Linux Kernel. This issue is caused by a race between mbind() and VMA-locked page fault, and may allow a local attacker to crash the system or lead to a kernel information leak.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

A use-after-free flaw was found in mm/mempolicy.c in the memory management subsystem in the Linux Kernel. This issue is caused by a race between mbind() and VMA-locked page fault, and may allow a local attacker to crash the system or lead to a kernel information leak.

Metrics

CVSS 3.1

6.3/10

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

EPSS Probability

0.26%

16.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 6.5	—
Linux	Linux Kernel	6.5	Rc1

References

https://access.redhat.com/security/cve/CVE-2023-4611Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2227244Issue Tracking, Patch, Third Party Advisory
https://www.spinics.net/lists/stable-commits/msg310136.htmlMailing List, Patch
https://access.redhat.com/security/cve/CVE-2023-4611Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2227244Issue Tracking, Patch, Third Party Advisory
https://www.spinics.net/lists/stable-commits/msg310136.htmlMailing List, Patch

Timeline

Published: Aug 29, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4611?

How severe is CVE-2023-4611?

CVE-2023-4611 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4611?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4611?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST