CVE-2020-25742 Information

Description

pci_change_irq_level in hw/pci/pci.c in QEMU before 5.1.1 has a NULL pointer dereference because pci_get_bus() might not return a valid pointer.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

Reference

http://www.openwall.com/lists/oss-security/2020/09/29/1 https://bugzilla.redhat.com/show_bug.cgi?id=1883178 https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05294.html https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=2Flsi_nullptr1

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

3.2