CVE-2023-52654

io_uring/af_unix: disable sending io_uring over sockets

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/af_unix: disable sending io_uring over sockets File reference cycles have caused lots of problems for io_uring in the past, and it still doesn't work exactly right and races with unix_stream_read_generic(). The safest fix would be to completely disallow sending io_uring files via sockets via SCM_RIGHT, so there are no possible cycles invloving registered files and thus rendering SCM accounting on the io_uring side unnecessary.

N/A

CVSS

Severity:

EPSS 1.33% Top 25%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/18824f592aad4124d79751bbc1500ea86ac3ff29
https://git.kernel.org/stable/c/3fe1ea5f921bf5b71cbfdc4469fb96c05936610e
https://git.kernel.org/stable/c/bcedd497b3b4a0be56f3adf7c7542720eced0792
https://git.kernel.org/stable/c/f2f57f51b53be153a522300454ddb3887722fb2c
https://git.kernel.org/stable/c/5a33d385eb36991a91e3dddb189d8679e2aac2be
https://git.kernel.org/stable/c/705318a99a138c29a512a72c3e0043b3cd7f55f4

Frequently Asked Questions

What is the severity of CVE-2023-52654?: CVE-2023-52654 has not yet been assigned a CVSS score.
How to fix CVE-2023-52654?: To fix CVE-2023-52654, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-52654 being actively exploited in the wild?: It is possible that CVE-2023-52654 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-52654?: CVE-2023-52654 affects Linux Linux, Linux Linux.

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