Vulnerability Details : CVE-2020-25742
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-25742
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25742
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25742
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
3.2
|
LOW | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |
1.5
|
1.4
|
NIST |
CWE ids for CVE-2020-25742
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-25742
-
https://bugzilla.redhat.com/show_bug.cgi?id=1883178
1883178 – (CVE-2020-25742) CVE-2020-25742 QEMU: scsi: lsi: null pointer dereference during memory moveIssue Tracking;Patch;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2020/09/29/1
oss-security - QEMU: NULL pointer derefrence issuesMailing List;Third Party Advisory
-
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Flsi_nullptr1
lsi_nullptr1 - Files - scieboThird Party Advisory
-
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05294.html
Re: [PATCH] pci: check bus pointer before dereferenceMailing List;Patch;Third Party Advisory
Jump to