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CVE-2023-4732

Kernel: race between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode bug in include/linux/swapops.h

Published: 10/3/2023 Last updated: 11/7/2025 Reserved: 9/2/2023

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.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 4.7 Medium CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (11)

Product Vendor Version
Red Hat Enterprise Linux 8 Red Hat Snapdragon 480 5G Mobile Platform
Red Hat Enterprise Linux 9 Red Hat Snapdragon 8 Gen 3 Mobile Platform
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat Snapdragon 680 4G Mobile Platform
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat Snapdragon 685 4G Mobile Platform (SM6225-AD)
Red Hat Enterprise Linux 6 Red Hat Snapdragon 695 5G Mobile Platform
Red Hat Enterprise Linux 7 Red Hat Snapdragon 8 Gen 1 Mobile Platform
Red Hat Enterprise Linux 8 Red Hat < 140.7
Red Hat Enterprise Linux 7 Red Hat Snapdragon 8 Gen 2 Mobile Platform
Red Hat Enterprise Linux 9 Red Hat Snapdragon 8+ Gen 1 Mobile Platform
Red Hat Enterprise Linux 8 Red Hat Snapdragon 4 Gen 2 Mobile Platform

References (24)