ClosedHighPatched

Linux Kernel: Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability

Linux Kernel

Linux kernel contains a time-of-check time-of-use (TOCTOU) race condition vulnerability that has a high impact on confidentiality, integrity, and availability. Added to CISA KEV on 2025-09-04.

Why this severity: CVSS 7.8 (CNA, v3.1); actively exploited (CISA KEV)

Started: Sep 4, 2025
Closed: Sep 4, 2025
CVE: CVE-2025-38352

Updated Sep 4, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Sep 4, 2025
CISA added CVE-2025-38352 to the KEV catalog (due 2025-09-25).

Advisories4

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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