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CVE-2020-25742

Good to know:

Date: October 6, 2020

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.

Language: C

Severity Score

3.2

Related Resources (9)

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1883178

Url: https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Flsi_nullptr1

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-25742

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-25742

Url: https://security.alpinelinux.org/vuln/CVE-2020-25742

Url: https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05294.html

Url: http://www.openwall.com/lists/oss-security/2020/09/29/1

Url: https://security-tracker.debian.org/tracker/CVE-2020-25742

Url: https://www.mend.io/vulnerability-database/CVE-2020-25742

Severity Score

3.2

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

Upgrade Version

Upgrade to version qemu-system-native - 5.0.0;qemu - 5.0.0

CVSS v3.1

Base Score:	3.2
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	HIGH
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	LOW

CVSS v2

Base Score:	2.1
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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