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CVE-2026-46117 is a Linux kernel vulnerability in the RDMA/mana subsystem, specifically in mana_ib_create_qp_rss(). The issue arises because a user can supply, via the RDMA/mana uAPI, work queues (WQs) that share the same completion queue (CQ). This invalid user-controlled configuration reaches a WARN_ON() path that is triggerable by an unprivileged caller with access to the relevant interface. After the WARN_ON() is hit, execution continues in a state that can corrupt kernel memory or kernel state. The upstream fix removes the user-triggerable WARN_ON() condition by rejecting such queue pair creation requests outright when the supplied WQs share the same CQ.
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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.
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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.
4 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.