What is CVE-2026-62840?

CVE-2026-62840 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Linux Kernel Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-62840 cover?

CVE-2026-62840 covers the following CVE IDs: CVE-2026-62840. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-62840?

CVE-2026-62840 has a CVSS v3 base score of 7.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-62840?

CVE-2026-62840 affects 2 products, including: Linux 3P (Third Party) Distros; Linux kernel - Microsoft MANA Network Driver.

CVE-2026-62840CriticalCVSS 7.0

Linux Kernel Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-62840 →

📋 Description

Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.

🎯 Affected products2

Linux 3P (Third Party) Distros
Linux kernel - Microsoft MANA Network Driver

✅ Remediation

KBRelease Notes (Security Update) — fixed build 7.3

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62840
patchhttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35f0f0a2536a4d604b4dbad92c85c4a8fdebb870