PT-2018-2577 · Linux+3 · Linux Kernel+3
Wei Wu
·
Published
2018-11-19
·
Updated
2019-05-28
·
CVE-2018-19407
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.19.2
Description
The issue is related to the
vcpu scan ioapic function in the Linux kernel, which can cause a denial of service due to a NULL pointer dereference and BUG when crafted system calls are made, specifically in situations where ioapic is uninitialized. This can be exploited by local users to cause a service disruption. The vulnerability is associated with pointer dereference errors in the vcpu scan ioapic function, allowing an attacker to cause a denial of service through a system call to the Kernel-based Virtual Machine (KVM) virtualization subsystem.Recommendations
For Linux kernel versions prior to 4.19.2, update to a version 4.19.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the KVM virtualization subsystem to minimize the risk of exploitation.
Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Linux Kernel
Suse
Ubuntu