vulnerability
Red Hat: CVE-2023-4622: kernel: use after free in unix_stream_sendpage (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:P/I:P/A:C) | Sep 6, 2023 | Jan 10, 2024 | Sep 29, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:C)
Published
Sep 6, 2023
Added
Jan 10, 2024
Modified
Sep 29, 2025
Description
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.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-kernelredhat-upgrade-kernel-rt
References
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