Vulnerability Details : CVE-2019-3016
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.
Vulnerability category: Information leak
Exploit prediction scoring system (EPSS) score for CVE-2019-3016
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 17 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-3016
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST |
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.0
|
3.6
|
NIST |
|
6.2
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.5
|
3.6
|
Oracle |
CWE ids for CVE-2019-3016
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: secalert_us@oracle.com (Secondary)
-
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.Assigned by:
- nvd@nist.gov (Primary)
- secalert_us@oracle.com (Secondary)
References for CVE-2019-3016
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https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073e
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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https://usn.ubuntu.com/4300-1/
USN-4300-1: Linux kernel vulnerabilities | Ubuntu security notices
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https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini@redhat.com/
[FYI PATCH 0/5] Missing TLB flushes - Paolo BonziniVendor Advisory
-
https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1792167
1792167 – (CVE-2019-3016) CVE-2019-3016 kernel: kvm: Information leak within a KVM guestIssue Tracking;Third Party Advisory
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https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6e
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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http://www.openwall.com/lists/oss-security/2020/01/30/4
oss-security - CVE-2019-3016: information leak within a KVM guestMailing List;Third Party Advisory
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https://www.debian.org/security/2020/dsa-4699
Debian -- Security Information -- DSA-4699-1 linux
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https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
Kernel Live Patch Security Notice LSN-0065-1 ≈ Packet Storm
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https://security.netapp.com/advisory/ntap-20200313-0003/
February 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
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https://usn.ubuntu.com/4301-1/
USN-4301-1: Linux kernel vulnerabilities | Ubuntu security notices
Products affected by CVE-2019-3016
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.10:*:*:*:*:*:*:*