CVE-2026-3842

Name of the Vulnerable Software and Affected Versions QEMU (affected versions not specified)

Description A flaw allows a local attacker within a guest virtual machine to write data beyond its allocated memory. This occurs when the cpu physical memory map() function returns a shorter length than expected, leading to an out-of-bounds write. This 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.