Patch
CVE-2018-6951
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could crash the application by dereferencing a null pointer by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
An issue was discovered in GNU patch through 2.7.6. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.
Affects your stack
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Technical ContextAI · show details
This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. 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. Affected products include: Gnu Patch, Canonical Ubuntu Linux. Version information: through 2.7.6..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
An Invalid Pointer vulnerability exists in GNU patch 2.7 via the another_hunk function, which causes a Denial of Service
GNU patch 2.7.1 allows remote attackers to write to arbitrary files via a symlink attack in a patch file. Rated medium s
Directory traversal vulnerability in GNU patch versions which support Git-style patching before 2.7.3 allows remote atta
GNU patch through 2.7.6 is vulnerable to OS shell command injection that can be exploited by opening a crafted patch fil
GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_
A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6. Rated high severity (CVSS 7.5), t
Tanium addressed an incorrect default permissions vulnerability in Patch. [CVSS 6.5 MEDIUM]
An authenticated SQL injection (CWE-89) in the Tanium Patch module lets a low-privilege user with valid console credenti
SQL injection in Tanium Patch allows authenticated low-privilege attackers to read, modify, or delete data from the back
In GNU patch through 2.7.6, the following of symlinks is mishandled in certain cases other than input files. Rated mediu
GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fa
GNU patch enters an infinite CPU-consuming loop when processing a specially crafted unified-diff file containing an exce
GitHub PoC
Exploit-DB