CVE-2019-14877
Medium
Description
In the __mdiff function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate big integers, however no check is performed to verify if the allocation succeeded or not. The access to _wds and _sign will trigger a null pointer dereference bug in case of a memory allocation failure.
SeverityMedium
CVSS6.5
Exploit probability—
ProductNewlib
PublishedMar 19, 2020
First seenMar 19, 2020
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- newlib_project newlib3.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| newlib_project newlib | v < 3.3.0 | 3.3.0 |
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