CVE-2021-39515: 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 SampleInterleavedLSScan::ParseMCU() located in sampleinterleavedlsscan.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-2021-39515?
CVE-2021-39515 is classified as a Denial of Service vulnerability.
How do I fix CVE-2021-39515?
To fix CVE-2021-39515, upgrade to a version of libjpeg that is newer than 2020021.
What causes the issue in CVE-2021-39515?
CVE-2021-39515 is caused by a NULL pointer dereference in the SampleInterleavedLSScan::ParseMCU() function.
Which software is affected by CVE-2021-39515?
CVE-2021-39515 affects libjpeg versions up to and including 2020021.
What types of attacks can CVE-2021-39515 enable?
CVE-2021-39515 can enable attackers to execute Denial of Service attacks against applications using vulnerable versions of libjpeg.
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- vendor/jpeg
- canonical/ijg libjpeg
- version/ijg libjpeg/2020021