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Vulnerability record · CVE-2023-4732 · published 3 October 2023

CVE-2023-4732: Linux kernel race condition vulnerability

Linux · Linux Kernel

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.

4.7 CVSS 3.1 Medium EPSS 0.18% · top 93.0% CWE-366 · CWE-366CWE-362 · Race condition
4.7CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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.

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2023-4732), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.