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Category:   Application (Generic)  >   QEMU Vendors:
QEMU VMXNET3 IMR Read Error Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1034575
SecurityTracker URL:
CVE Reference:   CVE-2015-8745   (Links to External Site)
Date:  Jan 5 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in QEMU. A local user on the guest system can cause denial of service conditions on the host system.

A local user with CAP_SYS_RAWIO privileges on the guest system can trigger an error reading Interrupt Mask Registers to cause the target Qemu process to crash.

Systems built with a VMWARE VMXNET3 paravirtual NIC emulator support are affected.

Impact:   A local user on the guest system can cause the target Qemu process to crash.
Solution:   The vendor has issued a source code fix [in October 2015], available at:;a=commit;h=c6048f849c7e3f009786df76206e895

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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