CVE-2018-6951: canonical ubuntu_linux NULL Pointer Dereference
CVSS: 7.5v3.0HighModified
AliasesALPINE-CVE-2018-6951UBUNTU-CVE-2018-6951DEBIAN-CVE-2018-6951CGA-frg3-gqm6-92qrCGA-xhhf-6rv8-7mhq
Published 13-02-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-6951 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 8.36% chance of exploitation in the next 30 days, higher than 94.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
8.36%
0%100%
Low · -0.07 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 13-02-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
7 scores · 6 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 6 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
8.36%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
-0.07 pp
From 8.43% on 19-09-2026
19-09-202619-10-2026
EPSS score8.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- patch< 2.7.6-r2 | < 2.7.5-r2
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10
Chainguard1 product
- patch< 2.7.6-r3
Debian1 product
- patchAll versions (No fix recorded)
Gnu1 product
- patch≤ 2.7.6
Ubuntu1 product
- patch< 2.7.1-4ubuntu2.4 | < 2.7.5-1ubuntu0.16.04.1
Wolfi1 product
- patch< 2.7.6-r3
7 vendors · 7 products
References
11 links- git.savannah.gnu.org/cgit/patch.git/commit/?id=f290f48a621867084884bfff87f8093c15195e6aX Refsource MISCPatchVendor AdvisoryFIX
