CVE-2021-39516: 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 HuffmanDecoder::Get() located in huffmandecoder.hpp. 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-2021-39516?
CVE-2021-39516 has a severity rating that enables attackers to exploit a NULL pointer dereference, leading to denial of service.
How do I fix CVE-2021-39516?
To fix CVE-2021-39516, update to a version of libjpeg that is later than 2020021.
What vulnerability class does CVE-2021-39516 belong to?
CVE-2021-39516 belongs to the vulnerability class of denial of service due to a NULL pointer dereference.
What software is affected by CVE-2021-39516?
CVE-2021-39516 affects versions of libjpeg up to and including 2020021.
Can CVE-2021-39516 be exploited remotely?
Yes, CVE-2021-39516 can potentially be exploited remotely by an attacker to trigger a denial of service.
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- canonical/ijg libjpeg
- version/ijg libjpeg/2020021