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Description

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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-28 | Updated 2026-06-01 | Assigner Linux

Product status

Default status
unaffected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before 0949d8bbbedbafe0136a1723c41eb823c2f1e09d
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before e792cfb6aeaf65612cdf8e3ac431d65e66283654
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before ebeb70e29e37cfce899309cc2665a3bfe960ed94
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before b157dab93a7af44a84e78cf0cb311dde475cff5b
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before 7eb513b42721bee4b96da69f6188d5a7783f210d
affected

9061f24bf82ec2e92dd1e7c10b98b680db023d31 (git) before b5c52908d52c6c8eb8933264aa6087a0600fd892
affected

Default status
affected

5.14
affected

Any version before 5.14
unaffected

5.15.209 (semver)
unaffected

6.1.175 (semver)
unaffected

6.6.140 (semver)
unaffected

6.12.88 (semver)
unaffected

6.18.30 (semver)
unaffected

7.0.7 (semver)
unaffected

7.1-rc2 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d

git.kernel.org/...c/e792cfb6aeaf65612cdf8e3ac431d65e66283654

git.kernel.org/...c/ebeb70e29e37cfce899309cc2665a3bfe960ed94

git.kernel.org/...c/b157dab93a7af44a84e78cf0cb311dde475cff5b

git.kernel.org/...c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc

git.kernel.org/...c/7eb513b42721bee4b96da69f6188d5a7783f210d

git.kernel.org/...c/b5c52908d52c6c8eb8933264aa6087a0600fd892

cve.org (CVE-2026-46168)

nvd.nist.gov (CVE-2026-46168)

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