CRITICAL 9.8 Microsoft

CVE-2026-31607

usbip: validate number_of_packets in usbip_pack_ret_submit()

Microsoft Security Update 2026-Apr: usbip: validate number_of_packets in usbip_pack_ret_submit()

Affected Products

azl3 kernel 6.6.130.1-3 on Azure Linux 3.0
azl3 kernel 6.6.134.1-2 on Azure Linux 3.0
cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0

References

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-09-19

This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-04-14 via Microsoft. Affected: azl3 kernel 6.6.130.1-3 on Azure Linux 3.0, azl3 kernel 6.6.134.1-2 on Azure Linux 3.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0.

Risk Timeline

CVE Disclosed2026-04-14 · 157 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31607

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2026-31607

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