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medium5.5

CVE-2026-46168

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic conte…

Impact

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.14 before 5.15.209
from 5.16 before 6.1.175
from 6.2 before 6.6.140
from 6.7 before 6.12.88
from 6.13 before 6.18.30
from 6.19 before 7.0.7

References