CVE-2026-46168 | mptcp: fix scheduling with atomic in timestamp sockopt

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.

Published: 2026-05-28 Last update: 2026-06-01 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Conclusion & alert: CVE-2026-46168 is rated Low Risk (5.2/100): low exploitation likelihood (EPSS 0.02%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-46168

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 0.02%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-46168

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-46168

GitHub Security Advisory for CVE-2026-46168

GHSA-78r5-m85f-q5m9 · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with...

OS Trackers for CVE-2026-46168

vendor priority summary link
debian unimportant CVE-2026-46168 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2026-46168
redhat medium https://access.redhat.com/security/cve/CVE-2026-46168
suse https://www.suse.com/security/cve/CVE-2026-46168/

Affected software / configurations for CVE-2026-46168

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-46168

cvelogic Threat Intelligence