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CVE-2026-64563 is a use-after-free vulnerability in the Linux kernel rhashtable walker restart logic. During a multi-fragment hash-table walk resumed across rhashtable walk-stop/walk-start boundaries, rhashtable_walk_start_check() handles a table that was freed during resize by resetting iterator slot and skip state but fails to clear the stale iter->p object pointer. rhashtable_walk_next() can subsequently dereference that pointer and read freed slab memory. Affected callers include netlink diagnostic dumping and TIPC socket walks.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
An unspecified Linux kernel vulnerability addressed for Red Hat Enterprise Linux 9.
A vulnerability addressed by an AlmaLinux 8 kernel update advisory (RHSA-2026:66000).
A Linux kernel rhashtable vulnerability involving stale iterator state on table restart, addressed by the Rocky Linux RLSA-2026:64770 update.
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.