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CVE-2024-42102 affects the Linux kernel memory-management writeback dirty-throttling logic. A prior change to wb_dirty_limits() removed a 64-bit cast from a multiplication used to calculate dirty limits. On 32-bit architectures, the multiplication can overflow when the relevant dirty-threshold values have a product of at least 2^32. The correction reverts that change, restoring safe-width arithmetic; it also avoids an unnecessarily costly 64-bit division implementation on 32-bit systems.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.