Vulnerability Description
The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 2.7.1 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d
- http://www.openwall.com/lists/oss-security/2016/09/16/3Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/16/9Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92998Third Party AdvisoryVDB Entry
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.htmlPatchThird Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d
- http://www.openwall.com/lists/oss-security/2016/09/16/3Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/16/9Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92998Third Party AdvisoryVDB Entry
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.htmlPatchThird Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
FAQ
What is CVE-2016-7421?
CVE-2016-7421 is a vulnerability with a CVSS score of 4.4 (MEDIUM). The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by ...
How severe is CVE-2016-7421?
CVE-2016-7421 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-7421?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Debian Debian Linux.