Search: CVE-2026-63939

1 threat

Severity	CVSS	Signals	Threat	Source	Published	Score and star
Critical	9.3	EPSS 0.2%	CVE-2026-63939Linux kernel · Heap-based Buffer Overflow Critical9.3EPSS 0.2%2026-07-19CVE Database V5CVE-2026-63939 CVE-2026-63939 is a critical vulnerability in the Linux kernel's KVM SEV implementation related to incorrect calculation of the maximum length of the in-GHCB scratch area. The flaw involves setting the effective length of the scratch area incorrectly when it resides in the GHCB shared buffer, potentially leading to buffer overflows during certain PSC requests. This vulnerability has been fixed in Linux kernel version 6.11. EPSS 0.2%Vulnerability CWE-122	CVE Database V5	2026-07-19

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