CVE-2020-25742

CVSS V2 Low 2.1 CVSS V3 Low 3.2
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.
Overview
  • CVE ID
  • CVE-2020-25742
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-10-06T15:15:15
  • Last Modified Date
  • 2020-10-07T13:32:37
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* 1 OR 5.1.1
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 3.2
  • Base Severity
  • LOW
  • Exploitability Score
  • 1.5
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Flsi_nullptr1 Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/29/1 Mailing List Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05294.html Mailing List Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1883178 Issue Tracking Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-25742
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25742
History
Created Old Value New Value Data Type Notes
2022-05-10 17:10:01 Added to TrackCVE
2022-12-04 23:46:20 2020-10-06T15:15Z 2020-10-06T15:15:15 CVE Published Date updated
2022-12-04 23:46:20 2020-10-07T13:32:37 CVE Modified Date updated
2022-12-04 23:46:20 Analyzed Vulnerability Status updated