Saint BadAlloc

Technical record

Disclosed on

April 29 2021

CVE

CVE-2021-3420CVE-2021-22156

CVSS

9.0

Product

BlackBerry · newlib

A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.

Sources: microsoft.com