CVE-2026-46168 Details
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.
A vulnerability in the Linux kernel's Multipath TCP (MPTCP) implementation has been addressed. The issue arose from using 'lock_sock_fast()' in an atomic context while setting timestamps on sockets, which is unsafe because the timestamping functions can block. This vulnerability affects the Linux kernel stable tree.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d | kernel.org | Patch |
| https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210d | kernel.org | Patch |
| https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc | kernel.org | Patch |
| https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5b | kernel.org | Patch |
| https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.14, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 7.1 rc1 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 10, 2026 | Initial Analysis | [email protected] |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |