CVE-2015-7513 Information

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 Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5