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Bug 1382668 - (CVE-2016-7995) CVE-2016-7995 Qemu: usb: hcd-ehci: memory leak in ehci_process_itd
CVE-2016-7995 Qemu: usb: hcd-ehci: memory leak in ehci_process_itd
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20160926,reported=2...
: Security
Depends On: 1382669
Blocks: 1382469
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Reported: 2016-10-07 07:03 EDT by Prasad J Pandit
Modified: 2018-07-18 11:02 EDT (History)
35 users (show)

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Description Prasad J Pandit 2016-10-07 07:03:57 EDT
Qemu emulator(Qemu) built with the USB EHCI emulation support is vulnerable
to a memory leakage flaw. It could occur while processing isochronous transfer
descriptors(iTD), with buffer page select(PG) index that falls beyond buffer
page array area.

A privileged user inside guest could use this flaw to leak Qemu memory bytes
leading to a DoS on the host.

Upstream fix:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg06609.html
Comment 1 Prasad J Pandit 2016-10-07 07:04:28 EDT
Acknowledgments:

Name: Li Qiang (360.cn Inc.)
Comment 2 Prasad J Pandit 2016-10-07 07:06:29 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1382669]

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