CVE-2016-9754 Information

Description

The ring_buffer_resize function in kernel/trace/ring_buffer.c in the profiling subsystem in the Linux kernel before 4.6.1 mishandles certain integer calculations which allows local users to gain privileges by writing to the /sys/kernel/debug/tracing/buffer_size_kb file.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59643d1535eb220668692a5359de22545af579f6 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1 http://www.securityfocus.com/bid/95278 https://github.com/torvalds/linux/commit/59643d1535eb220668692a5359de22545af579f6 https://source.android.com/security/bulletin/2017-01-01.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8