Bug 1303226 - qemu: Use-after-free vulnerability when unplugging devices
qemu: Use-after-free vulnerability when unplugging devices
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
low Severity low
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Assigned To: Red Hat Product Security
: Security
Depends On:
Blocks: 1305966
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Reported: 2016-01-29 16:27 EST by Adam Mariš
Modified: 2016-04-26 09:27 EDT (History)
39 users (show)

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Doc Type: Bug Fix
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Last Closed: 2016-02-11 01:20:18 EST
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Description Adam Mariš 2016-01-29 16:27:27 EST
Qemu emulator built with the IDE Emulation with PCI PIIX3/4 support is vulnerable to a use after free flaw. It occurs while unplugging the IDE device in pci_piix3_xen_ide_unplug in Xen virtualisation setup.

A privileged user inside guest could use this issue to crash the Qemu process resulting in DoS.

Upstream patch:
  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=6cd387833d05e8ad31829d97e47

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