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CVE-2026-46181 is a race condition in the Linux kernel RDMA/mlx4 subsystem's mlx4_srq_event() function. The event path relied on RCU despite mlx4_srq objects not being freed through RCU and being accessed outside an RCU read-side critical section. An event may therefore reference an SRQ object before its initialization completes, resulting in unsafe access to a partially initialized object. The fix replaces the unsafe RCU handling with spinlock protection, uses refcount_inc_not_zero() to prevent references to incomplete objects, and delays refcount_set() until full SRQ initialization has completed.
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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.
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Unity Linux vulnerability requiring local access, low privileges, and high attack complexity, with potential high impact to confidentiality, integrity, and availability.
A specific vulnerability referenced in a Unity Linux local security check advisory/plugin. The content indicates it is a locally exploitable flaw with high impact on confidentiality, integrity, and availability.
A Linux kernel RDMA/mlx4 vulnerability involving misuse of RCU in mlx4_srq_event().
A Linux kernel RDMA/mlx4 vulnerability caused by misuse of RCU in mlx4_srq_event().
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.