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Fencer Vulns
high 7.5

CVE-2018-6951 json

An issue was discovered in GNU patch through 2.7.6.

published 2018-02-13 8 y ago modified 2026-07-25 3 mo ago also EUVD-2018-18695 , JLSEC-2026-14

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.4%
EPSS 8.4% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

An issue was discovered in GNU patch through 2.7.6. There is a segmentation fault, associated with a NULL pointer dereference, leading to a denial of service in the intuit_diff_type function in pch.c, aka a "mangled rename" issue.

Patch / fix

  • julia patch_jll 2.8.0+0
  • patch Ubuntu 14.04 LTS 2.7.1-4ubuntu2.4
  • patch Ubuntu 16.04 LTS 2.7.5-1ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2018-6951

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • patch SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 2.7.5-8.5.1

suse advisories SUSE-SU-2018:1128-1

  • patch openSUSE Tumbleweed 2.7.6-3.43

opensuse advisories openSUSE-SU-2024:11151-1

  • patch Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 2.7.6-r2
  • patch Alpine 3.7, Alpine 3.6, Alpine 3.5 +1 more 2.7.5-r2

alpine advisories ALPINE-CVE-2018-6951

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • patch Azure Linux 3.0 2.7.6-9
  • patch CBL-Mariner 2.0 2.7.6-7

azure linux advisories AZL-35103AZL-6787

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • patch Arch Linux 2.7.6-3

arch linux advisories AVG-619

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-2018-6951 updated cvss 3.3

patch: NULL pointer dereference in pch.c:intuit_diff_type() causes a crash

  • Red Hat Enterprise Linux 5 patch Red Hat Enterprise Linux 6 patch Red Hat Enterprise Linux 7 patch Red Hat Enterprise Linux 8 patch
    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

8.36% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia patch_jll
<2.8.0+0
2.8.0+0

Classification

Weakness

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.