Wind River Support Network


LIN1021-6499 : Security Advisory - linux - CVE-2023-4622

Created: Sep 6, 2023    Updated: Sep 8, 2023
Resolved Date: Sep 8, 2023
Found In Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel


A 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.

CREATE(Triage):(User=admin) CVE-2023-4622 (


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