HIGH 7.8 Microsoft
CVE-2026-3842
Qemu-kvm: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host oob write
Microsoft Security Update 2026-Jul: Qemu-kvm: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host oob write
Affected Products
- azl3 qemu 9.1.0-10 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-3842
- https://nvd.nist.gov/vuln/detail/CVE-2026-3842
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-07-14 via Microsoft. Affected: azl3 qemu 9.1.0-10 on Azure Linux 3.0.
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