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CVE-2022-28893 is a use-after-free vulnerability in the Linux kernel SunRPC implementation, in net/sunrpc/xprt.c. Through Linux kernel 5.17.2, the SUNRPC subsystem can invoke xs_xprt_free before confirming that associated sockets have reached their intended state. This unsafe object-lifetime handling can allow a local low-privileged attacker to crash the system and may expose kernel information.
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No public exploit code observed for this vulnerability.
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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 high-severity Linux kernel SUNRPC subsystem flaw affecting kernels through version 5.17.2, caused by xs_xprt_free potentially being called before sockets are confirmed to be in the intended state. The referenced update remediates the issue in Google COS lakitu-kernel packages.
Linux kernel use-after-free in the SUNRPC subsystem.
Linux kernel SUNRPC subsystem use-after-free vulnerability.
Linux kernel SUNRPC subsystem 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.