What is CVE-2026-42250?

CVE-2026-42250 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. Off-by-One Leading to Out-of-Bounds Write in bzip2

Which CVE IDs does CVE-2026-42250 cover?

CVE-2026-42250 covers the following CVE IDs: CVE-2026-42250. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-42250?

CVE-2026-42250 affects 5 products, including: azl3 bzip2 1.0.8-1 on Azure Linux 3.0; azl3 bzip2 1.0.8-2 on Azure Linux 3.0; azl3 kata-containers-cc 3.15.0.aks0-12 on Azure Linux 3.0; azl3 kata-containers-cc 3.15.0.aks0-15 on Azure Linux 3.0; azl3 kata-containers-cc 3.15.0.aks0-9 on Azure Linux 3.0.

CVE-2026-42250Low

Off-by-One Leading to Out-of-Bounds Write in bzip2

Vendor

Microsoft Security Response Center (MSRC)

Published

June 1, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42250 →

🎯 Affected products5

azl3 bzip2 1.0.8-1 on Azure Linux 3.0
azl3 bzip2 1.0.8-2 on Azure Linux 3.0
azl3 kata-containers-cc 3.15.0.aks0-12 on Azure Linux 3.0
azl3 kata-containers-cc 3.15.0.aks0-15 on Azure Linux 3.0
azl3 kata-containers-cc 3.15.0.aks0-9 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.0.8-2 KBCBL-Mariner Releases (Security Update) — fixed build 3.15.0.aks0-15

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42250
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade