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high7.8

CVE-2023-52654

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 l…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.4.220 before 5.4.264
from 5.10.150 before 5.10.204
from 5.15.75 before 5.15.143
from 5.19.17 before 5.20
from 6.0.3 before 6.1.68
from 6.2 before 6.6.7

References