CVE-2023-1476

Name: CVE-2023-1476
Creator: NVD / NIST
Published: 2023-11-03T09:15:13.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2023-1476 is a high-severity vulnerability rated 7/10 on the CVSS scale. A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

Metrics

CVSS 3.1

7/10

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

EPSS Probability

0.23%

13.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.14
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Eus	8.8
Redhat	Enterprise Linux For Power Little Endian	8.0_ppc64le
Redhat	Enterprise Linux For Power Little Endian Eus	8.8_ppc64le
Redhat	Enterprise Linux Server Tus	8.8

References

https://access.redhat.com/errata/RHSA-2023:1659Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-1476Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2176035Issue Tracking
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2Mailing List, Patch
https://access.redhat.com/errata/RHSA-2023:1659Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-1476Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2176035Issue Tracking
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2Mailing List, Patch

Timeline

Published: Nov 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-1476?

How severe is CVE-2023-1476?

CVE-2023-1476 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2023-1476?

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-2023-1476?

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

Scan your code now

Source: NVD / NIST