CVE-2019-14873: Null Pointer Dereference
First published: Thu Mar 19 2020(Updated: )
In the __multadd function of the newlib libc library, prior to versions 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. This will trigger a null pointer dereference bug in case of a memory allocation failure.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Newlib Project Newlib | <3.3.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-14873?
CVE-2019-14873 is classified as a moderate severity vulnerability due to the potential for null pointer dereferences.
How do I fix CVE-2019-14873?
To fix CVE-2019-14873, upgrade newlib to version 3.3.0 or later where the issue has been addressed.
What versions of newlib are affected by CVE-2019-14873?
CVE-2019-14873 affects newlib versions prior to 3.3.0.
What does CVE-2019-14873 exploit?
CVE-2019-14873 exploits a lack of error checking after memory allocation in the __multadd function.
What type of vulnerability is CVE-2019-14873?
CVE-2019-14873 is a null pointer dereference vulnerability that can lead to application crashes.
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