CVE-2016-4020
- Source
- https://cve.org/CVERecord?id=CVE-2016-4020
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-4020.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2016-4020
- Downstream
- Related
- Published
- 2016-05-25T15:59:04.927Z
- Modified
- 2026-05-19T12:00:26.421454342Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).
- Database specific
{ "unresolved_ranges": [ { "extracted_events": [ { "last_affected": "12.04" }, { "last_affected": "14.04" }, { "last_affected": "15.10" }, { "last_affected": "16.04" } ], "source": "CPE_FIELD", "vendor_product": "canonical:ubuntu_linux", "cpes": [ "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*" ] }, { "extracted_events": [ { "last_affected": "8.0" } ], "source": "CPE_FIELD", "vendor_product": "debian:debian_linux", "cpes": [ "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "7.0" } ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_desktop", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "7.4" }, { "last_affected": "7.5" }, { "last_affected": "7.6" }, { "last_affected": "7.7" } ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_eus", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "7.0" } ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_server", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "7.4" }, { "last_affected": "7.6" }, { "last_affected": "7.7" } ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_server_aus", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*" ] }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*" ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_server_tus", "extracted_events": [ { "last_affected": "7.6" }, { "last_affected": "7.7" } ] }, { "extracted_events": [ { "last_affected": "7.0" } ], "source": "CPE_FIELD", "vendor_product": "redhat:enterprise_linux_workstation", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "6.0" }, { "last_affected": "7.0" }, { "last_affected": "8" }, { "last_affected": "9" }, { "last_affected": "10" }, { "last_affected": "11" } ], "source": "CPE_FIELD", "vendor_product": "redhat:openstack", "cpes": [ "cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "last_affected": "4.0" } ], "source": "CPE_FIELD", "vendor_product": "redhat:virtualization", "cpes": [ "cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*" ] } ] }- References
-
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0
- http://www.securityfocus.com/bid/86067
- http://www.ubuntu.com/usn/USN-2974-1
- https://access.redhat.com/errata/RHSA-2017:1856
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://security.gentoo.org/glsa/201609-01
- https://bugzilla.redhat.com/show_bug.cgi?id=1313686
- https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html
Affected packages
Git / github.com/qemu/qemu
Affected ranges
- Type
- GIT
- Repo
- https://github.com/qemu/qemu
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "extracted_events": [ { "introduced": "0" }, { "last_affected": "2.6.2" } ], "source": "CPE_FIELD", "cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*" }
Affected versions
v0.*
v0.1.0
v0.1.1
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.11.0-rc0
v0.12.0-rc0
v0.13.0-rc0
v0.14.0-rc0
v0.2.0
v0.3.0
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v1.*
v1.0
v1.0-rc0
v1.0-rc1
v1.0-rc2
v1.0-rc3
v1.0-rc4
v1.1-rc0
v1.1-rc1
v1.1-rc2
v1.1.0
v1.1.0-rc2
v1.1.0-rc3
v1.1.0-rc4
v1.2.0
v1.2.0-rc0
v1.2.0-rc1
v1.2.0-rc2
v1.2.0-rc3
v1.3.0
v1.3.0-rc0
v1.3.0-rc1
v1.3.0-rc2
v1.4.0
v1.4.0-rc0
v1.4.0-rc1
v1.4.0-rc2
v1.5.0
v1.5.0-rc0
v1.5.0-rc1
v1.5.0-rc2
v1.5.0-rc3
v1.6.0
v1.6.0-rc0
v1.6.0-rc1
v1.6.0-rc2
v1.6.0-rc3
v1.7.0
v1.7.0-rc0
v1.7.0-rc1
v1.7.0-rc2
v2.*
v2.0.0
v2.0.0-rc0
v2.0.0-rc1
v2.0.0-rc2
v2.0.0-rc3
v2.1.0
v2.1.0-rc0
v2.1.0-rc1
v2.1.0-rc2
v2.1.0-rc3
v2.1.0-rc4
v2.1.0-rc5
v2.2.0
v2.2.0-rc0
v2.2.0-rc1
v2.2.0-rc2
v2.2.0-rc3
v2.2.0-rc4
v2.2.0-rc5
v2.3.0
v2.3.0-rc0
v2.3.0-rc1
v2.3.0-rc2
v2.3.0-rc3
v2.3.0-rc4
v2.4.0
v2.4.0-rc0
v2.4.0-rc1
v2.4.0-rc2
v2.4.0-rc3
v2.4.0-rc4
v2.5.0
v2.5.0-rc0
v2.5.0-rc1
v2.5.0-rc2
v2.5.0-rc3
v2.5.0-rc4
v2.6.0
v2.6.0-rc0
v2.6.0-rc1
v2.6.0-rc2
v2.6.0-rc3
v2.6.0-rc4
v2.6.0-rc5
v2.6.1
v2.6.2