23 Oct 2026 15:48:27 UTC
Use-after-free in Linux kernel's af_unix component
cve-program · CVE-2023-4622 · Published
CVE-2023-4622
Use-after-free in Linux kernel's af_unix component
CVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2023-4622
PublishedA use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free. We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c (or backported equivalents).
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