oss-security - CVE-2017-8086 Qemu: 9pfs: host memory leakage via v9pfs_list

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [day] [month] [year] [list]

Date: Tue, 25 Apr 2017 15:23:42 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Li Qiang <liqiang6-s@....cn>
Subject: CVE-2017-8086 Qemu: 9pfs: host memory leakage via v9pfs_list_xattr

   Hello,

Quick Emulator(Qemu) built with the virtio-9p back-end support is vulnerable 
to a memory leakage issue. It could occur while querying file system extended 
attributes via 9pfs_list_xattr() routine.

A privileged user/process inside guest could use this flaw to leak host memory 
resulting in Dos.

Upstream patch:
---------------
   -> http://git.qemu.org/?p=qemu.git;a=commit;h=4ffcdef4277a91af15a3c09f7d16af072c29f3f2

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1444781

This issue was reported by Li Qiang of Qihoo 360 Gear Team.

'CVE-2017-8086' assigned via -> http://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.