CVE-2022-1263
Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 31 Aug 2022, 15:33
Last modified:02 Aug 2024, 23:55
Vulnerability Summary
Overall Risk (default)
medium
32/100 CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.07% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected
Timeline
31 Aug 2022, 15:33
Published
Vulnerability first disclosed
02 Aug 2024, 23:55
Last Modified
Vulnerability information updated
Description
A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
CVSS Metrics
- v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Trends
Current EPSS score: 0.07%• Percentile: 21%
Techniques & Countermeasures
- CWE-476•NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Systems
- linux•linux_kernel
< 5.18 | 5.18:rc1 | 5.18:rc2
- redhat•enterprise_linux
8.0 | 9.0