QEMU (aka Quick Emulator) built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to crash issue. It occurs when a guest sends a Layer-2 packet smaller than 22 bytes. A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance resulting in DoS.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-8744
• https://bugzilla.redhat.com/show_bug.cgi?id=1270871
• https://security.gentoo.org/glsa/201602-01
• http://git.qemu.org/?p=qemu.git;a=commitdiff;h=a7278b36fcab9af469563bd7b
• http://www.debian.org/security/2016/dsa-3471
• http://www.openwall.com/lists/oss-security/2016/01/04/3
• http://www.openwall.com/lists/oss-security/2016/01/04/6
• http://www.securityfocus.com/bid/79821
• http://www.securitytracker.com/id/1034576
• http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=a7278b36fcab9af469563bd7b