CVE-2015-7513
Mediumarch/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 3.1 score
6.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness type
CWE-369CVE-2015-7513 is a Divide By Zero vulnerability
What is Divide By Zero?
The product divides a value by zero, causing a crash or unexpected behaviour. Learn more on MITRE CWE
References
The following references provide additional information about CVE-2015-7513 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Debian Securityhttp://www.debian.org/security/2016/dsa-3434Third Party Advisory
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Securityfocushttp://www.securityfocus.com/bid/79901Third Party Advisory VDB Entry
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Securitytrackerhttp://www.securitytracker.com/id/1034602Third Party Advisory VDB Entry
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2886-1Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2887-1Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2887-2Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2888-1Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2889-1Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2889-2Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2890-1Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2890-2Third Party Advisory
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Ubuntu Securityhttp://www.ubuntu.com/usn/USN-2890-3Third Party Advisory
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PatchKernel patch commithttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8
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PatchKernel patch commithttp://www.openwall.com/lists/oss-security/2016/01/07/2
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PatchKernel patch commithttps://bugzilla.redhat.com/show_bug.cgi?id=1284847
Frequently asked questions
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What is CVE-2015-7513?
CVE-2015-7513 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 , classified as a Divide By Zero flaw (CWE-369) . CVE-2015-7513 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2015-7513?
CVE-2015-7513 has a CVSS score of 6.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H. -
Is there a patch available for CVE-2015-7513?
No patch is currently available for CVE-2015-7513. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2015-7513 actively exploited?
No — CVE-2015-7513 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
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What is Divide By Zero (CWE-369)?
The product divides a value by zero, causing a crash or unexpected behaviour. View CWE-369 on MITRE CWE →