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Date: Thu, 6 Dec 2018 14:38:32 +0530 (IST)
From: P J P <>
To: oss security list <>
cc: Michael Hanselmann <>
Subject: CVE-2018-16867 QEMU: dev-mtp: path traversal in usb_mtp_write_data
 of the Media Transfer Protocol (MTP)


A flaw was found in qemu Media Transfer Protocol (MTP). A path traversal in 
the in usb_mtp_write_data function in hw/usb/dev-mtp.c due to an improper 
filename sanitization. When the guest device is mounted in read-write mode, 
this allows to read/write arbitrary files which may lead do DoS scenario OR 
possibly lead to code execution on the host.

Upstream patch:

This issue was reported by Michael Hanselmann of

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

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