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CVE-2023-4732 is a race condition in the Linux kernel memory-management subsystem's pfn_swap_entry_to_page logic. Concurrent page migration and exit_mmap processing can operate on the same pages, causing a kernel BUG condition involving pmd_t x and an invalid-opcode fault.
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No public exploit code observed for this vulnerability.
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Linux kernel race between page migration and exit_mmap that can trigger an invalid-opcode failure.
Linux kernel race condition between page migration and exit_mmap page release.
Linux kernel race between page migration and exit_mmap page release operations.
Linux kernel race between page migration and exit_mmap() releasing the same pages, resulting in an invalid-opcode BUG.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.