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CVE-2023-52885 is a use-after-free vulnerability in the Linux kernel SUNRPC TCP server callback svc_tcp_listen_data_ready(). During a race between destruction of an NFSD/SUNRPC TCP listener and acceptance of an established child socket, the child socket can retain copied sk_user_data that points to the freed listener svc_sock. If the child receives data before svc_tcp_accept() processes it, svc_tcp_listen_data_ready() can dereference the stale object. The fix prevents the callback from dereferencing the service socket when the TCP socket state is no longer TCP_LISTEN.
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No public exploit code observed for this vulnerability.
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9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel SUNRPC use-after-free vulnerability in svc_tcp_listen_data_ready().
Linux kernel SUNRPC use-after-free vulnerability in svc_tcp_listen_data_ready().
Linux kernel SUNRPC use-after-free vulnerability in svc_tcp_listen_data_ready().
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.