Vulnerability Description
arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.4 |
| Debian | Debian Linux | 7.0 |
| Fedoraproject | Fedora | 22 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=018560PatchVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.hThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.htThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.htThird Party Advisory
- http://www.debian.org/security/2016/dsa-3434Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/07/2Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/79901Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1034602Third Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2886-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2887-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2887-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2888-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2889-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2889-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2890-1Third Party Advisory
FAQ
What is CVE-2015-7513?
CVE-2015-7513 is a vulnerability with a CVSS score of 6.5 (MEDIUM). arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and hos...
How severe is CVE-2015-7513?
CVE-2015-7513 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-7513?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Fedoraproject Fedora, Canonical Ubuntu Linux.