vulnerability
Oracle Linux: CVE-2017-2596: ELSA-2017-1842: kernel security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:A/AC:H/Au:S/C:N/I:N/A:C) | Jan 24, 2017 | Apr 4, 2017 | Jan 23, 2025 |
Severity
4
CVSS
(AV:A/AC:H/Au:S/C:N/I:N/A:C)
Published
Jan 24, 2017
Added
Apr 4, 2017
Modified
Jan 23, 2025
Description
The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.
Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled(nested=1), is vulnerable to host memory leakage issue. It could occur while emulating VMXON instruction in 'handle_vmon'. An L1 guest user could use this flaw to leak host memory potentially resulting in DoS.
Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled(nested=1), is vulnerable to host memory leakage issue. It could occur while emulating VMXON instruction in 'handle_vmon'. An L1 guest user could use this flaw to leak host memory potentially resulting in DoS.
Solution(s)
oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek
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