CVE Vulnerabilities

CVE-2015-7549

NULL Pointer Dereference

Published: Oct 30, 2017 | Modified: Feb 13, 2023
CVSS 3.x
6
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
2.3 LOW
AV:A/AC:M/Au:S/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM

The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Qemu Qemu * 2.5.0 (excluding)
Qemu Ubuntu trusty *
Qemu Ubuntu vivid *
Qemu Ubuntu wily *

Potential Mitigations

References