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 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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

Published

2026-05-28

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d
• https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210d
• https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc
• https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5b
• https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892

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