CVE-2021-39517: Null Pointer Dereference
First published: Mon Sep 20 2021(Updated: )
An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function BlockBitmapRequester::ReconstructUnsampled() located in blockbitmaprequester.cpp. It allows an attacker to cause Denial of Service.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IJG libjpeg | <=2020021 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-39517?
CVE-2021-39517 is classified as a Denial of Service vulnerability.
How do I fix CVE-2021-39517?
To fix CVE-2021-39517, update libjpeg to a version newer than 2020021.
What type of vulnerability is CVE-2021-39517?
CVE-2021-39517 is a NULL pointer dereference vulnerability.
What impact does CVE-2021-39517 have on affected systems?
CVE-2021-39517 can cause a Denial of Service, making affected systems unavailable.
In which software is CVE-2021-39517 found?
CVE-2021-39517 is found in versions of libjpeg up to and including 2020021.
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- version/ijg libjpeg/2020021