Integer overflow in malloc functions :

The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption. (CVE-2018-6551)

Integer overflow in posix_memalign in memalign functions :

An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.
(CVE-2018-6485)

Detections

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Amazon Linux 2 : glibc (ALAS-2018-992)

critical Nessus Plugin ID 109141

Version 1.2