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Fedora 23: 2016-17489 Moderate: Performance Issues in QEMU Resource Usage

fedora
Calendar Grey October 9, 2015
Dist Fedora Esm H88
Fedora update for QEMU resolves issues like infinite loops and heap overflows while improving performance stability.
* Fix typo causing qemu-img to link against entire world (bz #1260996) * CVE-2015-6815: net: e1000: infinite loop issue (bz #1260225) * CVE-2015-6855: ide: divide by zero issue (bz...

Summary

QEMU is a generic and open source processor emulator which achieves a good

emulation speed by using dynamic translation. QEMU has two operating modes:

* Full system emulation. In this mode, QEMU emulates a full system (for

example a PC), including a processor and various peripherials. It can be

used to launch different Operating Systems without rebooting the PC or

to debug system code.

* User mode emulation. In this mode, QEMU can launch Linux processes compiled

for one CPU on another CPU.

As QEMU requires no host kernel patches to run, it is safe and easy to use.

Update Information:

* Fix typo causing qemu-img to link against entire world (bz #1260996) * CVE-2015-6815: net: e1000: infinite loop issue (bz #1260225) * CVE-2015-6855: ide: divide by zero issue (bz #1261793) * CVE-2015-5278: Infinite loop in ne2000_receive() (bz #1263284) * CVE-2015-5279: Heap overflow vulnerability in ne2000_receive() (bz #1263287) * Make block copy more stable (bz #1264416) * Fix hang at start of live merge for large images (bz #1262901) ---- Fix emulation of various instructions, required by libm in F22 ppc64 guests.

Topics%20covered

Topics Covered

security advisory Fedora heap overflow infinite loop modification QEMU stability fix

Change Log

References


[ 1 ] Bug #1256672 - CVE-2015-5279 qemu: Heap overflow vulnerability in ne2000_receive() function https://bugzilla.redhat.com/show_bug.cgi?id=1256672 [ 2 ] Bug #1260076 - CVE-2015-6815 qemu: net: e1000: infinite loop issue https://bugzilla.redhat.com/show_bug.cgi?id=1260076 [ 3 ] Bug #1260080 - CVE-2015-6855 Qemu: ide: divide by zero issue https://bugzilla.redhat.com/show_bug.cgi?id=1260080 [ 4 ] Bug #1256661 - CVE-2015-5278 qemu: Infinite loop in ne2000_receive() function https://bugzilla.redhat.com/show_bug.cgi?id=1256661

Update Instructions

This update can be installed with the "yum" update program. Use su -c 'yum update qemu' at the command line. For more information, refer to "Managing Software with yum", available at .

Severity
important
Lowest
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Name: qemu
Product: Fedora 22
Version: 2.3.1
Release: 5.fc22
URL: https://www.qemu.org/
Summary: QEMU is a FAST! processor emulator

Topics%20covered

Topics Covered

security advisory Fedora heap overflow infinite loop modification QEMU stability fix

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