CVE-2017-18255

high

Description

The perf_cpu_time_max_percent_handler function in kernel/events/core.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow) or possibly have unspecified other impact via a large value, as demonstrated by an incorrect sample-rate calculation.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1572e45a924f254d9570093abde46430c3172e3d

http://www.securityfocus.com/bid/103607

https://github.com/torvalds/linux/commit/1572e45a924f254d9570093abde46430c3172e3d

https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html

https://usn.ubuntu.com/3696-1/

https://usn.ubuntu.com/3696-2/

https://usn.ubuntu.com/3754-1/

Details

Source: MITRE

Published: 2018-03-31

Updated: 2019-01-19

Type: CWE-190

Risk Information

CVSS v2

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH