CVE-2026-46168

MEDIUM

mptcp: fix scheduling with atomic in timestamp sockopt

Title source: cna
STIX 2.1

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.

References (7)

Core 7

Scores

CVSS v3 5.5
EPSS 0.0013
EPSS Percentile 2.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (25)
linux/Kernel 5.14.0 - 5.15.209linux
linux/Kernel 5.16.0 - 6.1.175linux
linux/Kernel 6.13.0 - 6.18.30linux
linux/Kernel 6.19.0 - 7.0.7linux
linux/Kernel 6.2.0 - 6.6.140linux
linux/Kernel 6.7.0 - 6.12.88linux
Linux/Linux < 5.14
Linux/Linux 5.14
Linux/Linux 5.15.209 - 5.15.*
Linux/Linux 6.1.175 - 6.1.*
... and 15 more
Published May 28, 2026
Tracked Since May 28, 2026