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.
Metrics
CVSS 3.1 4.7/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| linux | linux_kernel | 4.10 to 5.6 |
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
Timeline
- Published
- Jan 31, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified