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CVE-2022-1966 is a rejected CVE candidate that duplicates CVE-2022-32250 and should not be used for vulnerability tracking. The underlying flaw is a use-after-free write in the Linux kernel netfilter nf_tables subsystem. Incorrect handling when removing stateful expressions, including the NFT_STATEFUL_EXPR check, can leave an object available for subsequent use after it has been freed.
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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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel netfilter use-after-free write vulnerability that can enable privilege escalation to root.
A Linux kernel netfilter use-after-free write vulnerability that can enable privilege escalation to root.
A Linux kernel netfilter use-after-free write vulnerability that can enable privilege escalation to root.
A use-after-free write vulnerability in the Linux kernel netfilter subsystem that can enable privilege escalation to root.
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.