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CVE-2022-20141 is a use-after-free vulnerability in the Linux kernel IPv4 IGMP implementation. Improper resource locking in the ip_check_mc_rcu function permits a race condition while inet sockets using IGMP are opened and closed. The race can cause the kernel to reference memory 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.
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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation vulnerability in the Android kernel caused by a use-after-free in ip_check_mc_rcu of igmp.c due to improper locking.
Linux kernel IGMP socket lifecycle use-after-free vulnerability.
Linux kernel IGMP use-after-free in ip_check_mc_rcu during inet socket open/close activity.
Linux IGMP socket lifecycle use-after-free vulnerability.
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.