Vulnerability Description
Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 2.6.2 |
| Debian | Debian Linux | 8.0 |
| Redhat | Virtualization | 4.0 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Openstack | 6.0 |
Related Weaknesses (CWE)
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=47882fa4975bf0b58dd74474329fdd715
- http://www.openwall.com/lists/oss-security/2016/08/19/10Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/19/6Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92556Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.htmlPatchThird Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=47882fa4975bf0b58dd74474329fdd715
- http://www.openwall.com/lists/oss-security/2016/08/19/10Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/19/6Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92556Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
FAQ
What is CVE-2016-6888?
CVE-2016-6888 is a vulnerability with a CVSS score of 4.4 (MEDIUM). Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maxi...
How severe is CVE-2016-6888?
CVE-2016-6888 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-2016-6888?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Debian Debian Linux, Redhat Virtualization, Redhat Enterprise Linux, Redhat Openstack.