7.5
CVSSv2

CVE-2018-6551

Published: 02/02/2018 Updated: 07/11/2023
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

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 previous versions could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption. (CVE-2018-6485)

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gnu glibc

Vendor Advisories

Integer overflow in malloc functions:The malloc implementation in the GNU C Library (aka glibc or libc6), from version 224 to 226 on powerpc, and only in version 226 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 ...
The malloc implementation in the GNU C Library (aka glibc or libc6), from version 224 to 226 on powerpc, and only in version 226 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 ...