CVE-2017-7495 Information

Description

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.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824 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 https://source.android.com/security/bulletin/2017-09-01

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5