CVE-2019-3016

medium
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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.

References

http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html

http://www.openwall.com/lists/oss-security/2020/01/30/4

https://bugzilla.redhat.com/show_bug.cgi?id=1792167

https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7

https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073e

https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589

https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6e

https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796

https://lore.kernel.org/lkml/[email protected]/

https://security.netapp.com/advisory/ntap-20200313-0003/

https://usn.ubuntu.com/4300-1/

https://usn.ubuntu.com/4301-1/

https://www.debian.org/security/2020/dsa-4699

Details

Source: MITRE

Published: 2020-01-31

Updated: 2020-06-10

Type: CWE-362

Risk Information

CVSS v2

Base Score: 1.9

Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.4

Severity: LOW

CVSS v3

Base Score: 4.7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1

Severity: MEDIUM

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
139858Amazon Linux 2 : kernel (ALAS-2020-1480)NessusAmazon Linux Local Security Checks
medium
138807RHEL 8 : kernel-rt (RHSA-2020:3016)NessusRed Hat Local Security Checks
high
138805RHEL 8 : kernel (RHSA-2020:3010)NessusRed Hat Local Security Checks
high
137341Debian DSA-4699-1 : linux - security updateNessusDebian Local Security Checks
medium
136239EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2020-1536)NessusHuawei Local Security Checks
critical
135129EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2020-1342)NessusHuawei Local Security Checks
critical
134784EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1292)NessusHuawei Local Security Checks
high
134659Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4301-1)NessusUbuntu Local Security Checks
medium
134658Ubuntu 18.04 LTS / 19.10 : Linux kernel vulnerabilities (USN-4300-1)NessusUbuntu Local Security Checks
medium
133381Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5526)NessusOracle Linux Local Security Checks
medium