PT-2022-4326 · Linux+7 · Linux Kernel+7
Gaoning Pan
+2
·
Published
2022-04-06
·
Updated
2023-08-14
·
CVE-2022-1263
CVSS v2.0
7.5
High
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
Linux Kernel versions prior to the fixed version
Description
The issue is related to a NULL pointer dereference in the KVM subsystem of the Linux kernel, specifically in the
kvm dirty ring push function. This flaw can be exploited by an unprivileged local attacker on the host to cause a denial of service by issuing specific ioctl calls, resulting in a kernel oops condition.Recommendations
For Linux Kernel versions prior to the fixed version, consider disabling the dirty ring support as a temporary workaround until a patch is available. Restrict access to the vulnerable
kvm dirty ring push function to minimize the risk of exploitation. Avoid using specific ioctl calls that can cause a kernel oops condition until the issue is resolved.Exploit
Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Centos
Linux Kernel
Linuxmint
Red Hat
Suse
Ubuntu