Heap Overflow Vulnerability in glibc 2.26's malloc Function

CVE-2017-17426 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.

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