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.

Classification

CVE ID: CVE-2023-52654

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 12.38% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

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

Timeline