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Status published
Medium
CVE-2019-3016
In a Linux KVM guest that has PV TLB enabled,...
Vulnerability Description
In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2020/01/30/4
- https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini%40redhat.com/
- https://bugzilla.redhat.com/show_bug.cgi?id=1792167
- https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073e
- https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7
- https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589
- https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796
- https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6e
- https://security.netapp.com/advisory/ntap-20200313-0003/
- https://usn.ubuntu.com/4300-1/
- https://usn.ubuntu.com/4301-1/
- http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
- https://www.debian.org/security/2020/dsa-4699
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Affected Vendor
linux
View all reports →Affected Software
linux_kernel
Vulnerable Versions:
4.10 to 5.6
Timeline
Official Publish:
January 31st, 2020
Last Modified:
September 30th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
MITRE ATT&CK TTPs
T1068
Exploitation for Privilege Escalation
Privilege Escalation
T1574
Hijack Execution Flow
Persistence
T1565
Data Manipulation
Impact
T1499
Endpoint Denial of Service
Impact
T1190
Exploit Public-Facing Application
Initial Access
T1213
Data from Information Repositories
Collection
T1005
Data from Local System
Collection
T1552
Unsecured Credentials
Credential Access
T1041
Exfiltration Over C2 Channel
Exfiltration