CVE-2018-6551

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190 CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://security.netapp.com/advisory/ntap-20190404-0003/
https://sourceware.org/bugzilla/show_bug.cgi?id=22774Issue Tracking, Mailing List, Third Party Advisory
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=8e448310d74b283c5cd02b9ed7fb997b47bf9b22
https://security.netapp.com/advisory/ntap-20190404-0003/
https://sourceware.org/bugzilla/show_bug.cgi?id=22774Issue Tracking, Mailing List, Third Party Advisory
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=8e448310d74b283c5cd02b9ed7fb997b47bf9b22

Timeline

Published: Feb 2, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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