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CVE-2026-3842 on CTRL-OS 26.05

Aliases: CVE-2026-3842

Packages: qemu

Status: Plausible

Advisory Information

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.

Updates

2026-07-14 20:18 CEST

Metadata changes:

  • Status for package qemu: “Plausible”

2026-07-14 15:54 CEST

Metadata changes:

  • Status for package qemu: “New”