PoC Index

CVE-2023-4622

HIGH 7.8EPSS 0.5%

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.

CVSS v3.1
7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.55% chance of exploitation in the next 30 days, 44th percentile
Published
2023-09-06
Updated
2025-02-13

Proof-of-concept exploits (1)

References

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