What is CVE-2018-7995?

CVE-2018-7995 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2018-03-09.

How severe is CVE-2018-7995?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Is CVE-2018-7995 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux Kernel

CVE-2018-7995

Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory. NOTE: a third party has indicated that this report is not security relevant

Vulnerability class: Race Condition

Published 2018-03-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 14.04, 16.04
Debian Linux — versions 7.0

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.debian.org/security/2018/dsa-4187 (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/3654-1/ (vendor-advisory, Third Party Advisory)
bugzilla.suse.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/ (Patch, Vendor Advisory)
www.debian.org/security/2018/dsa-4188 (vendor-advisory, Third Party Advisory)
lkml.org/lkml/2018/3/2/970 (Patch, Third Party Advisory)
www.securityfocus.com/bid/103356 (VDB Entry, Third Party Advisory, vdb-entry)
usn.ubuntu.com/3654-2/ (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2018/05/msg00000.html (mailing-list, Third Party Advisory)
usn.ubuntu.com/3656-1/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-7995?: CVE-2018-7995 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2018-03-09.
How severe is CVE-2018-7995?: Medium severity. CVSS v3 base score is 4.7 out of 10.
Is CVE-2018-7995 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.