CVE-2019-20633: Double Free
First published: Wed Mar 25 2020(Updated: )
GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CVE-2018-6952.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Patch | <=2.7.6 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-20633?
CVE-2019-20633 is classified as a moderate severity vulnerability.
How do I fix CVE-2019-20633?
To fix CVE-2019-20633, upgrade GNU patch to version 2.7.7 or later.
What type of vulnerability is CVE-2019-20633?
CVE-2019-20633 is a Double Free vulnerability that can lead to denial of service.
What is the impact of CVE-2019-20633?
The impact of CVE-2019-20633 includes potential denial of service when processing a crafted patch file.
Which versions of GNU patch are affected by CVE-2019-20633?
GNU patch versions up to and including 2.7.6 are affected by CVE-2019-20633.
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