CVE-2018-17972

MEDIUM

Linux Kernel < 4.18.11 - Unauthenticated Kernel Stack Information Disclosure via Procfs Race Condition

Title source: llm
STIX 2.1

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.

References (21)

Core 21
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3821-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3835-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0512
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3880-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-5/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-4/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105525
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3880-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3832-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3821-2/
Patch, Third Party Advisory x_refsource_misc
https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0514
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-3/
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0831
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2473

Scores

CVSS v3 5.5
EPSS 0.0006
EPSS Percentile 17.5%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-362
Status published
Products (14)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
debian/debian_linux 8.0
linux/linux_kernel < 4.18.11
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 7.0
redhat/enterprise_linux_server 7.6
... and 4 more
Published Oct 03, 2018
Tracked Since Feb 18, 2026