medium
5.5
CWE
200
Advisory Published
CVE Published
CVE Published
Updated

CVE-2019-7222: Infoleak

First published: Sat Feb 02 2019(Updated: )

An information leakage issue was found in the way Linux kernel's KVM hypervisor handled page fault exception while emulating instructions like VMXON, VMCLEAR, VMPTRLD, VMWRITE with memory address as an operand. It occurs if the operand is an mmio address, as the returned exception object holds uninitialised stack memory contents. A guest user/process could use this flaw to leak host's stack memory contents to a guest. It affects only Intel processors and only when nested virtualization is enabled. Upstream patch: --------------- -&gt; <a href="https://git.kernel.org/linus/353c0956a618a07ba4bbe7ad00ff29fe70e8412a">https://git.kernel.org/linus/353c0956a618a07ba4bbe7ad00ff29fe70e8412a</a> Reference: ---------- -&gt; <a href="https://www.openwall.com/lists/oss-security/2019/02/18/2">https://www.openwall.com/lists/oss-security/2019/02/18/2</a>

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:3.10.0-1062.rt56.1022.el7
0:3.10.0-1062.rt56.1022.el7
redhat/kernel<0:3.10.0-1062.el7
0:3.10.0-1062.el7
redhat/kernel-rt<0:4.18.0-147.rt24.93.el8
0:4.18.0-147.rt24.93.el8
redhat/kernel<0:4.18.0-147.el8
0:4.18.0-147.el8
Linux Kernel<=4.20.5
Fedora=28
Fedora=29
SUSE Linux=15.0
Debian=8.0
Ubuntu=12.04
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=18.10
NetApp Active IQ
NetApp Element Software
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server EUS=8.1
Red Hat Enterprise Linux Server EUS=8.2
Red Hat Enterprise Linux Server EUS=8.4
Red Hat Enterprise Linux Server EUS=8.6
Red Hat Enterprise Linux for Real Time=7
Red Hat Enterprise Linux for Real Time=8
Red Hat Enterprise Linux for Real Time for NFV=7
Red Hat Enterprise Linux for Real Time for NFV=8.2
Red Hat Enterprise Linux for Real Time for NFV=8.4
Red Hat Enterprise Linux for Real Time for NFV=8.6
Red Hat Enterprise Linux for Real Time=8.2
Red Hat Enterprise Linux for Real Time=8.4
Red Hat Enterprise Linux for Real Time=8.6
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Workstation=7.0
debian/linux
5.10.223-1
5.10.234-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.17-1

Remedy

http://www.openwall.com/lists/oss-security/2019/02/18/2

Remedy

https://bugs.chromium.org/p/project-zero/issues/detail?id=1759

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=353c0956a618a07ba4bbe7ad00ff29fe70e8412a

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2019-7222?

    CVE-2019-7222 has been classified as a medium severity vulnerability.

  • How do I fix CVE-2019-7222?

    To mitigate CVE-2019-7222, update your kernel to the version specified in the remedy for your Linux distribution.

  • Which versions are affected by CVE-2019-7222?

    CVE-2019-7222 affects various versions of the Linux kernel, specifically those up to 4.20.5.

  • Is my system vulnerable to CVE-2019-7222?

    To determine if your system is vulnerable to CVE-2019-7222, check the Linux kernel version against the affected versions.

  • What types of systems are affected by CVE-2019-7222?

    CVE-2019-7222 impacts the Linux kernel, impacting systems running various distributions like Red Hat, Fedora, Debian, and Ubuntu.

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