Vulnerability DatabaseCVE-2020-25742
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CVE-2020-25742
Published:October 06, 2020
Updated:May 17, 2026
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.
Related Resources (7)
http://www.openwall.com/lists/oss-security/2020/09/29/1
https://security-tracker.debian.org/tracker/CVE-2020-25742
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Flsi_nullptr1
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-25742
https://security.alpinelinux.org/vuln/CVE-2020-25742
https://bugzilla.redhat.com/show_bug.cgi?id=1883178
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05294.html
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CVSS v4
Base Score:
4.6
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
3.2
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
NULL Pointer Dereference
CWE-476
EPSS
Base Score:
0.04