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CVE-2023-3022 is a vulnerability in the IPv6 module of the Linux kernel, specifically in the fib6_rule_lookup function. The function inconsistently assigns the arg.result variable to either an rt6_info or a fib6_info structure. Other parts of the code, such as fib6_rule_suppress, unconditionally expect arg.result to be an rt6_info, leading to a potential type confusion. This can result in a kernel panic when the code attempts to access members of rt6_info on a fib6_info object.
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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.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown; the advisory references this CVE without describing the vulnerability.
A Linux kernel vulnerability addressed by this advisory; technical details are not provided in the content.
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.