PT-2019-1721 · Linux+5 · Linux Kernel+5
Jann Horn
·
Published
2019-02-07
·
Updated
2024-06-15
·
CVE-2019-6974
CVSS v2.0
9.3
High
| Vector | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.20.8
Description
The issue is caused by a race condition in the
kvm ioctl create device function, leading to a use-after-free error. This can be exploited by a remote attacker to cause a denial of service. The problem is related to errors in synchronization when using a shared resource.Recommendations
For Linux kernel versions prior to 4.20.8, update to version 4.20.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the
kvm ioctl create device function to minimize the risk of exploitation.Exploit
Fix
Use After Free
Race Condition
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Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu