mptcp: fix scheduling with atomic in timestamp sockopt

Summary

CVECVE-2026-46168
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:32 UTC
Updated2026-06-01 17:17:30 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 0949d8bbbedbafe0136a1723c41eb823c2f1e09d git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 e792cfb6aeaf65612cdf8e3ac431d65e66283654 git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 ebeb70e29e37cfce899309cc2665a3bfe960ed94 git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 b157dab93a7af44a84e78cf0cb311dde475cff5b git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 7eb513b42721bee4b96da69f6188d5a7783f210d git Not specified
CNA Linux Linux affected 9061f24bf82ec2e92dd1e7c10b98b680db023d31 b5c52908d52c6c8eb8933264aa6087a0600fd892 git Not specified
CNA Linux Linux affected 5.14 Not specified
CNA Linux Linux unaffected 5.14 semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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