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CVE-2026-46168

mptcp: fix scheduling with atomic in timestamp sockopt

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.209, 6.1.175, 6.6.140, 6.12.88, 6.18.30, and 1 more
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in 0949d8bbbedbafe0136a1723c41eb823c2f1e09d; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in e792cfb6aeaf65612cdf8e3ac431d65e66283654; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in ebeb70e29e37cfce899309cc2665a3bfe960ed94; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in b157dab93a7af44a84e78cf0cb311dde475cff5b; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in 7eb513b42721bee4b96da69f6188d5a7783f210d; From 9061f24bf82ec2e92dd1e7c10b98b680db023d31 · fixed in b5c52908d52c6c8eb8933264aa6087a0600fd892

  • Linux Linux

    5.14

  • KernelLinux

    From 5.14.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.6.140; From 6.7.0 · fixed in 6.12.88; From 6.13.0 · fixed in 6.18.30; From 6.19.0 · fixed in 7.0.7

References 7

git.kernel.org