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CVE-2021-0920 is a use-after-free vulnerability in the Linux kernel AF_UNIX implementation. A race condition involving UNIX-domain socket ancillary-data processing in unix_scm_to_skb and UNIX socket garbage collection in unix_gc can cause a freed object to be accessed. The issue affects Android kernels and was also remediated through Linux kernel updates distributed for supported Red Hat Enterprise Linux releases.
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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.
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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.
39 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown (the content only lists a blog post title referencing CVE-2021-0920 in the Linux kernel, without describing the vulnerability details).
A use-after-free flaw in the Linux kernel unix_gc() function that could result in local privilege escalation.
Linux kernel use-after-free vulnerability in unix_gc() that could result in local privilege escalation.
A use-after-free flaw in the Linux kernel unix_gc() function that could result in local privilege escalation.
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.