CVE-2023-4732: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: up to and including 5.13.19
• Red Hat Codeready Linux Builder: version 8.0 only
• Red Hat Codeready Linux Builder For ARM64: version 8.0_aarch64 only
• Red Hat Codeready Linux Builder For Power Little Endian: version 8.0_ppc64le only
• Red Hat Enterprise Linux: version 8.0 only
• Red Hat Enterprise Linux For Arm 64: version 8.0_aarch64 only
• Red Hat Enterprise Linux For IBM Z Systems: version 8.0_s390x only
• Red Hat Enterprise Linux For Power Little Endian: version 8.0_ppc64le only
• Red Hat Enterprise Linux For Real Time: version 8.0 only
• Red Hat Enterprise Linux For Real Time For Nfv: version 8.0 only

Published 2023-10-03. Last modified 2026-06-17.