Vulnerability in Linux Kernel
CVE-2018-17972
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0, 7.6
- Red Hat Enterprise Linux Server Aus — versions 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.6
- Red Hat Enterprise Linux Server Tus — versions 7.6
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
References
- usn.ubuntu.com/3821-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3835-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0512 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3880-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3871-5/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3871-4/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105525 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3880-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3832-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3821-2/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17972?
- CVE-2018-17972 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.5/10. Published 2018-10-03.
- How severe is CVE-2018-17972?
- Medium severity. CVSS v3 base score is 5.5 out of 10.