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CVE-2024-40983 is an improper reference-count handling vulnerability in the Linux kernel Transparent Inter Process Communication (TIPC) decryption path. The path can enter cryptographic handlers without first forcing a reference on the socket buffer destination entry. Because cryptographic requests can complete asynchronously after the RCU-protected region has been left, the destination entry may no longer be safely referenced, resulting in a kernel warning or crash. The corrective change forces the destination reference count before decryption.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability covered by the security update.
Linux kernel TIPC destination reference-counting flaw before decryption.
Linux kernel TIPC flaw involving destination reference-count handling before decryption.
Linux kernel TIPC reference-count handling issue before decryption.
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.