CVE-2026-46168
MEDIUM severity · CVSS 5.5
5.5CVSS MEDIUM
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09dPatch
- https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210dPatch
- https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfcPatch
- https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5bPatch
- https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892Patch
- https://git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654Patch
- https://git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94Patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html