CVE-2018-17972 Information

Description

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html http://www.securityfocus.com/bid/105525 https://access.redhat.com/errata/RHSA-2019:0512 https://access.redhat.com/errata/RHSA-2019:0514 https://access.redhat.com/errata/RHSA-2019:0831 https://access.redhat.com/errata/RHSA-2019:2473 https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2 https://support.f5.com/csp/article/K27673650?utm_source=f5support&utm_medium=RSS https://usn.ubuntu.com/3821-1/ https://usn.ubuntu.com/3821-2/ https://usn.ubuntu.com/3832-1/ https://usn.ubuntu.com/3835-1/ https://usn.ubuntu.com/3871-1/ https://usn.ubuntu.com/3871-3/ https://usn.ubuntu.com/3871-4/ https://usn.ubuntu.com/3871-5/ https://usn.ubuntu.com/3880-1/ https://usn.ubuntu.com/3880-2/

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