CVE-2017-8244 Information

Description

In core_info_read and inst_info_read in all Android releases from CAF using the Linux kernel variable \dbg_buf\ \dbg_buf-curr\ and \dbg_buf-filled_size\ could be modified by different threads at the same time but they are not protected with mutex or locks. Buffer overflow is possible on race conditions. \buffer-curr\ itself could also be overwritten which means that it may point to anywhere of kernel memory (for write).

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/98547 https://source.android.com/security/bulletin/pixel/2017-12-01 https://www.codeaurora.org/buffer-overflow-msmvidc-debugfs-driver-coreinforead-and-instinforead-cve-2017-8244

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0