Unrated severityNVD Advisory· Published Oct 3, 2023· Updated Nov 7, 2025
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
CVE-2023-4732
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
33cpe:/a:redhat:enterprise_linux:8::crb+ 4 more
- cpe:/a:redhat:enterprise_linux:8::crbrange: 0:4.18.0-513.5.1.el8_9
- cpe:/a:redhat:enterprise_linux:8::realtimerange: 0:4.18.0-513.5.1.rt7.307.el8_9
- cpe:/o:redhat:enterprise_linux:6
- cpe:/o:redhat:enterprise_linux:7
- cpe:/o:redhat:enterprise_linux:9
- Red Hat/Red Hat Virtualization 4 for Red Hat Enterprise Linux 8v5cpe:/a:redhat:rhel_eus:8.6::crbRange: 0:4.18.0-372.87.1.el8_6
- Red Hat/Red Hat Enterprise Linux 8.8 Extended Update Supportv5cpe:/o:redhat:rhel_eus:8.8::baseosRange: 0:4.18.0-477.36.1.el8_8
- osv-coords25 versionspkg:rpm/almalinux/bpftoolpkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/perfpkg:rpm/almalinux/python3-perf
< 4.18.0-513.5.1.el8_9+ 24 more
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
- (no CPE)range: < 4.18.0-513.5.1.el8_9
Patches
Vulnerability mechanics
References
6- access.redhat.com/errata/RHSA-2023:6901mitrevendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2023:7077mitrevendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2023:7539mitrevendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2024:0412mitrevendor-advisoryx_refsource_REDHAT
- access.redhat.com/security/cve/CVE-2023-4732mitrevdb-entryx_refsource_REDHAT
- bugzilla.redhat.com/show_bug.cgimitreissue-trackingx_refsource_REDHAT
News mentions
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