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Date: Mon, 18 Mar 2019 12:44:20 +0530 (IST)
From: P J P <>
To: oss security list <>
cc: William Bowling <>
Subject: CVE-2019-9824 QEMU: Slirp: information leakage in tcp_emu() due to
 uninitialized stack variables


An information leakage issue was found in the SLiRP networking implementation 
of the QEMU emulator. It occurs in tcp_emu() routine while emulating 
Identification protocol, when crafted messages are sent to make it return 
uninitialized variables.

A user/process could use this flaw to read uninitialised stack memory contents 
from the QEMU process resulting in information leakage.

Upstream patch:

This issue was reported by William Bowling. CVE requested via

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

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