CVE-2026-46168
Published May 28, 2026
Modified Jun 1, 2026
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.
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EPSS — Exploit Prediction
0.0013
Probability of exploitation
0.03%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other 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
https://git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654
https://git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94
Frequently Asked Questions
What is 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.
How do I check if I'm vulnerable to CVE-2026-46168? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.