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CVE-2026-3842

HIGH CVSS: 7.8 Published: 2026-07-16 Modified: 2026-07-16

Description

A flaw was found in QEMU. This vulnerability allows a local attacker within a guest virtual machine to write data beyond its allocated memory. This occurs when cpu_physical_memory_map() returns a shorter length than expected, leading to an out-of-bounds write. Successful exploitation could result in unauthorized access to guest memory or corruption of heap-allocated objects, potentially causing information disclosure, data integrity issues, or a denial of service.

Affected Platforms

Unknown

Weakness Type

CWE-787, CWE-787

References