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List:       oss-security
Subject:    [oss-security] CVE-2019-12155 QEMU: qxl: null pointer dereference while releasing spice resources
From:       P J P <ppandit () redhat ! com>
Date:       2019-05-22 7:20:24
Message-ID: nycvar.YSQ.7.76.1905221234330.22124 () xnncv
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   Hello,

A null pointer dereference issue was found the QXL VGA card emulator of QEMU. 
It could occur while releasing resources allocated for a SPICE server thread 
in interface_release_resources().

A guest user could use this flaw to crash the QEMU process resulting in DoS 
scenario.

Upstream patch:
---------------
   -> https://git.qemu.org/?p=qemu.git;a=commit;h=d52680fc932efb8a2f334cc6993e705ed1e31e99

This issue was reported by Sergej Schumilo, Cornelius Aschermann and Simon 
Wrner of Ruhr University Bochum.

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