What is CVE-2026-63809?

CVE-2026-63809 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. bpf: use kvfree() for replaced sysctl write buffer

Which CVE IDs does CVE-2026-63809 cover?

CVE-2026-63809 covers the following CVE IDs: CVE-2026-63809. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-63809?

CVE-2026-63809 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-63809MediumCVSS 5.5

bpf: use kvfree() for replaced sysctl write buffer

Vendor

Microsoft Security Response Center (MSRC)

Published

July 23, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-63809 →