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.
Does this matter?
Lower severity and a low EPSS score (0.62%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.62% probability · 49th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-362
- Affected
- linux/linux kernel
- Source
- secalert_us@oracle.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
- http://www.openwall.com/lists/oss-security/2020/01/30/4Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1792167Issue Tracking, Third Party Advisory
- https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7Patch, Vendor Advisory
- https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073ePatch, Vendor Advisory
- https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589Patch, Vendor Advisory
- https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6ePatch, Vendor Advisory
- https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796Patch, Vendor Advisory
- https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini%40redhat.com/
- 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
- http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
- http://www.openwall.com/lists/oss-security/2020/01/30/4Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1792167Issue Tracking, Third Party Advisory
- https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7Patch, Vendor Advisory
- https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073ePatch, Vendor Advisory
- https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589Patch, Vendor Advisory
- https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6ePatch, Vendor Advisory
- https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796Patch, Vendor Advisory
- https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini%40redhat.com/
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.