CVE-2026-46168

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < 0949d8bbbedbafe0136a1723c41eb823c2f1e09daffected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < e792cfb6aeaf65612cdf8e3ac431d65e66283654affected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < ebeb70e29e37cfce899309cc2665a3bfe960ed94affected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < b157dab93a7af44a84e78cf0cb311dde475cff5baffected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < 8a005fe451c73fd2b3d1faa5643c11e6bd07acfcaffected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < 7eb513b42721bee4b96da69f6188d5a7783f210daffected
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31 < b5c52908d52c6c8eb8933264aa6087a0600fd892affected
LinuxLinux5.14affected
LinuxLinux0 < 5.14unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.88 <= 6.12.*unaffected
LinuxLinux6.18.30 <= 6.18.*unaffected
LinuxLinux7.0.7 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References