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CVE-2022-39190 is a denial-of-service vulnerability in the Linux kernel nftables/netfilter subsystem, in net/netfilter/nf_tables_api.c. Linux kernels before 5.19.6 did not prevent a chain from being bound when it was already bound. Rebinding such a chain can place nftables state into an invalid condition and trigger denial of service.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel nftables vulnerability involving binding to an already bound chain.
Linux kernel nftables chain-binding flaw addressed by disallowing bindings to already bound chains.
A Linux kernel netfilter/nftables denial-of-service vulnerability affecting versions before 5.19.6. Binding to an already bound chain can trigger the denial of service.
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.