Loading vulnerability…
CVE-2026-74581 is a use-after-free vulnerability in Linux kernel IPv6 policy-routing logic. fib6_rule_suppress() releases a suppressed route through ip6_rt_put_flags() but leaves res->rt6 pointing to the released rt6_info. If no subsequent routing rule supplies a replacement, fib6_rule_lookup() returns the stale destination to rt6_lookup(). A subsequent destination release reaches rcuref_put_slowpath() through dst_release(), potentially causing kernel instability or denial of service.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
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.
36 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Linux kernel's IPv6 networking code. A stale res->rt6 pointer causes the flaw in fib6_rule_suppress. The advisory identifies affected RHEL 10 packages and provides a kernel live patch, but does not describe exploitation prerequisites or consequences.
A specific vulnerability included in a Red Hat Enterprise Linux 10 kernel security advisory. The supplied content does not identify its precise technical flaw beyond associated CWE references in the aggregate notice.
A Linux kernel IPv6 networking use-after-free vulnerability in fib6_rule_suppress caused by a stale res->rt6 pointer, addressed through the Red Hat kpatch live-update advisory RHSA-2026:72630.
A use-after-free vulnerability in the Linux kernel IPv6 networking code caused by a stale res->rt6 pointer in fib6_rule_suppress, addressed by the RHEL kpatch 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.