USN-3651-1: QEMU update

Packages

qemu - Machine emulator and virtualizer

Details

Ken Johnson and Jann Horn independently discovered that microprocessors utilizing
speculative execution of a memory read may allow unauthorized memory reads via
sidechannel attacks. An attacker in the guest could use this to expose sensitive
guest information, including kernel memory. This update allows QEMU to expose new
CPU features added by microcode updates to guests on amd64 and i386.

Update instructions

After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes.

Learn more about how to get the fixes.

Ubuntu Release	Package Version
18.04 bionic	qemu – 1:2.11+dfsg-1ubuntu7.2
	qemu-system – 1:2.11+dfsg-1ubuntu7.2
	qemu-system-x86 – 1:2.11+dfsg-1ubuntu7.2
17.10 artful	qemu – 1:2.10+dfsg-0ubuntu3.7
	qemu-system – 1:2.10+dfsg-0ubuntu3.7
	qemu-system-x86 – 1:2.10+dfsg-0ubuntu3.7
16.04 xenial	qemu – 1:2.5+dfsg-5ubuntu10.29
	qemu-system – 1:2.5+dfsg-5ubuntu10.29
	qemu-system-x86 – 1:2.5+dfsg-5ubuntu10.29
14.04 trusty	qemu – 2.0.0+dfsg-2ubuntu1.42
	qemu-system – 2.0.0+dfsg-2ubuntu1.42
	qemu-system-x86 – 2.0.0+dfsg-2ubuntu1.42

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References

CVE-2018-3639

Packages

Details

Update instructions

Reduce your security exposure

References

Related notices