Loading vulnerability…
CVE-2023-3777 is a use-after-free flaw in the Linux kernel netfilter nf_tables subsystem. During table-rule flushing, nf_tables_delrule() fails to verify whether the affected chain is bound. Under specific object-lifecycle conditions, the chain owner rule can release the same objects, leaving nf_tables operating on freed memory.
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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel use-after-free vulnerability in Netfilter nf_tables.
Linux kernel use-after-free vulnerability in the Netfilter nf_tables subsystem.
Linux kernel use-after-free vulnerability in Netfilter nftables.
Linux kernel use-after-free vulnerability in the Netfilter nftables subsystem.
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.