fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
http://www.openwall.com/lists/oss-security/2017/05/15/2
http://www.securityfocus.com/bid/98491
https://bugzilla.redhat.com/show_bug.cgi?id=1450261
https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824
Source: MITRE
Published: 2017-05-15
Updated: 2017-09-09
Type: CWE-200
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM