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CVE-2024-26924 is a stale-pointer use-after-free condition in the Linux kernel netfilter nft_set_pipapo set implementation. During removal, nft_pipapo_remove() can unmap the wrong element when multiple elements share a key and an existing mapping has timed out or is inactive in the next generation. The intended inactive element can remain reachable in the set data structure after it is freed, allowing a subsequent lookup to dereference a stale pointer and crash the kernel. The fix verifies that a fully matching key maps to the element marked inactive, continues searching when it does not, and adds a warning trap for removal of invisible, unreachable, or nonexistent elements.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel Netfilter nft_set_pipapo stale-pointer/use-after-free-style flaw that can cause a crash when an incorrectly deactivated element remains reachable after removal.
Linux kernel Netfilter nft_set_pipapo flaw involving freeing of a live set element.
Linux kernel Netfilter nft_set_pipapo live-element freeing flaw.
Linux kernel Netfilter nft_set_pipapo live-element freeing flaw.
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.