VulnerabilityModified
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.
MEDIUM 4.7EPSS 0.62%
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 · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-362
- Affected
- linux/linux kernel
- Source
- secalert_us@oracle.com
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. Refreshed daily.