What is CVE-2026-53303?

CVE-2026-53303 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

Which CVE IDs does CVE-2026-53303 cover?

CVE-2026-53303 covers the following CVE IDs: CVE-2026-53303. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-53303?

CVE-2026-53303 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-53303?

CVE-2026-53303 affects 1 product, including: azl3 kernel 6.6.139.1-1 on Azure Linux 3.0.

CVE-2026-53303HighCVSS 7.1

f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-53303 →

🎯 Affected products1

azl3 kernel 6.6.139.1-1 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53303