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Vulnerabilities
Vulnerability

CVE-2026-46168

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
5.5 Medium
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.13%
Risk score
1.5
Published
2026-05-28
Status
Published

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 flaw was found in the Linux kernel's Multipath TCP (MPTCP) implementation. This vulnerability stems from an unsafe operation where `lock_sock_fast()`, intended for atomic contexts, is used with functions like `sock_set_timestamp()` and `sock_set_timestamping()` that can cause the system to sleep. Such an operation can lead to a 'scheduling while atomic panic', effectively allowing a local user to trigger a system crash and cause a Denial of Service (DoS).

Weaknesses

CWE-821

Coverage 7

Advisories and references