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Fencer Vulns
high 7.8

CVE-2018-12931 json

ntfs_attr_find in the ntfs.ko filesystem driver in the Linux kernel 4.15.0 allows attackers to trigger a stack-based out-of-bounds write an…

published 2018-06-28 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-4884

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

ntfs_attr_find in the ntfs.ko filesystem driver in the Linux kernel 4.15.0 allows attackers to trigger a stack-based out-of-bounds write and cause a denial of service (kernel oops or panic) or possibly have unspecified other impact via a crafted ntfs filesystem.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.19.37-1

debian advisories DEBIAN-CVE-2018-12931

  • kernel-rt enterprise mrg 2 1:3.10.0-693.46.1.rt56.639.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.46.1.rt56.639.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.46.1.rt56.639.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.46.1.rt56.639.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.46.1.rt56.639.el6rt

red hat advisories RHSA-2019:0641

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-12931 updated cvss 4.6

kernel: stack-based out-of-bounds write in ntfs_attr_find in the ntfs.ko

  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-trace 3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-vanilla 3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-firmware 3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.46.1.rt56.639.el6rt
    fixed: vendor fix RHSA-2019:0641
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.