CVE-2015-7513

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/01/07/2 mailing list third party advisory patch
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2887-2 third party advisory vendor advisory
https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8 third party advisory patch
http://www.ubuntu.com/usn/USN-2886-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2887-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2890-3 third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8 patch vendor advisory
http://www.ubuntu.com/usn/USN-2889-1 third party advisory vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2889-2 third party advisory vendor advisory
http://www.securityfocus.com/bid/79901 vdb entry third party advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2890-2 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1284847 issue tracking third party advisory patch
http://www.ubuntu.com/usn/USN-2890-1 third party advisory vendor advisory
http://www.debian.org/security/2016/dsa-3434 third party advisory vendor advisory
http://www.securitytracker.com/id/1034602 vdb entry third party advisory
http://www.ubuntu.com/usn/USN-2888-1 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-7513?
CVE-2015-7513 has been scored as a medium severity vulnerability.
How to fix CVE-2015-7513?
To fix CVE-2015-7513, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-7513 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-7513 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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