CVE-2017-16994 Information

Description

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call.

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=373c4557d2aa362702c4c2d41288fb1e54990b7c http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2 http://www.securityfocus.com/bid/101969 https://access.redhat.com/errata/RHSA-2018:0502 https://bugs.chromium.org/p/project-zero/issues/detail?id=1431 https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c https://usn.ubuntu.com/3617-1/ https://usn.ubuntu.com/3617-2/ https://usn.ubuntu.com/3617-3/ https://usn.ubuntu.com/3619-1/ https://usn.ubuntu.com/3619-2/ https://usn.ubuntu.com/3632-1/ https://www.exploit-db.com/exploits/43178/

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