CVE-2023-4732

Name: CVE-2023-4732
Creator: NVD / NIST
Published: 2023-10-03T17:15:09.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.7/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2023-4732 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A flaw was found in pfn_swap_entry_to_page in memory management subsystem in the Linux Kernel. In this flaw, an attacker with a local user privilege may cause a denial of service problem due to a BUG statement referencing pmd_t x.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

A flaw was found in pfn_swap_entry_to_page in memory management subsystem in the Linux Kernel. In this flaw, an attacker with a local user privilege may cause a denial of service problem due to a BUG statement referencing pmd_t x.

Metrics

CVSS 3.1

4.7/10

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

EPSS Probability

0.18%

7.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 5.13.19
Redhat	Codeready Linux Builder	8.0
Redhat	Codeready Linux Builder For Arm64	8.0_aarch64
Redhat	Codeready Linux Builder For Power Little Endian	8.0_ppc64le
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux For Arm 64	8.0_aarch64
Redhat	Enterprise Linux For Ibm Z Systems	8.0_s390x
Redhat	Enterprise Linux For Power Little Endian	8.0_ppc64le
Redhat	Enterprise Linux For Real Time	8.0
Redhat	Enterprise Linux For Real Time For Nfv	8.0

References

https://access.redhat.com/errata/RHSA-2023:6901Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7539Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0412
https://access.redhat.com/security/cve/CVE-2023-4732Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2236982Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7539Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0412
https://access.redhat.com/security/cve/CVE-2023-4732Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2236982Issue Tracking, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-4732?

How severe is CVE-2023-4732?

CVE-2023-4732 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4732?

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-2023-4732?

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

Scan your code now

Source: NVD / NIST