Bug 1413001 (CVE-2017-2584) - CVE-2017-2584 Kernel: kvm: use after free in complete_emulated_mmio
Summary: CVE-2017-2584 Kernel: kvm: use after free in complete_emulated_mmio
Alias: CVE-2017-2584
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1413002
Blocks: 1412321
TreeView+ depends on / blocked
Reported: 2017-01-13 11:30 UTC by Prasad Pandit
Modified: 2021-02-17 02:47 UTC (History)
37 users (show)

Fixed In Version: 3.10.0-560.el7
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Clone Of:
Last Closed: 2018-12-10 11:38:30 UTC

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Description Prasad Pandit 2017-01-13 11:30:34 UTC
Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM) support
is vulnerable to a use after free flaw. It could occur on x86 platform,
when emulating instructions fxsave, fxrstor, sgdt, etc.

A user/process could use this flaw to crash the host kernel resulting in DoS.

Upstream patch:
  -> https://www.spinics.net/lists/kvm/msg143571.html

  -> http://www.openwall.com/lists/oss-security/2017/01/13/7

Comment 1 Prasad Pandit 2017-01-13 11:32:08 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1413002]

Comment 6 Prasad Pandit 2017-03-31 09:46:28 UTC

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

This issue affects the version of Linux kernel as shipped with
Red Hat Enterprise Linux 7.

This has been rated as having Low security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:

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