Division by zero in Linux kernel - CVE-2015-7513
Published: February 8, 2016 / Updated: December 10, 2021
Vulnerability identifier: #VU91382
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-7513
CWE-ID: CWE-369
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to a crash the entire system.
The vulnerability exists due to a division by zero error within the kvm_vm_ioctl_get_pit(), kvm_vm_ioctl_get_pit2() and kvm_vm_ioctl_set_pit2() functions in arch/x86/kvm/x86.c. A local user can a crash the entire system.
How to mitigate CVE-2015-7513
Install update from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=1284847
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8
- https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8
- http://www.openwall.com/lists/oss-security/2016/01/07/2
- http://www.ubuntu.com/usn/USN-2889-1
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
- http://www.ubuntu.com/usn/USN-2890-1
- http://www.ubuntu.com/usn/USN-2890-3
- http://www.ubuntu.com/usn/USN-2887-2
- http://www.ubuntu.com/usn/USN-2890-2
- http://www.ubuntu.com/usn/USN-2887-1
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html
- http://www.ubuntu.com/usn/USN-2888-1
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2889-2
- http://www.securityfocus.com/bid/79901
- http://www.securitytracker.com/id/1034602
- http://www.debian.org/security/2016/dsa-3434