What is CVE-2025-21866?

CVE-2025-21866 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. powerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC

Which CVE IDs does CVE-2025-21866 cover?

CVE-2025-21866 covers the following CVE IDs: CVE-2025-21866. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-21866?

CVE-2025-21866 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

CVE-2025-21866MediumCVSS 5.5

powerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC

Vendor

Microsoft Security Response Center (MSRC)

Published

July 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-21866 →