What is the vulnerability CVE-2018-6551?

The vulnerability CVE-2018-6551 is a memory allocation issue in the GNU C Library (glibc) versions 2.24 to 2.26 on powerpc and version 2.26 on i386, which can lead to a smaller heap region being returned than requested.

How severe is CVE-2018-6551?

CVE-2018-6551 has a severity rating of 9.8, which is considered critical.

What software is affected by CVE-2018-6551?

The GNU C Library (glibc) versions 2.24 to 2.26 on powerpc and version 2.26 on i386 are affected by CVE-2018-6551.

How can I fix CVE-2018-6551?

Apply the appropriate patch or update provided by the software vendor to fix CVE-2018-6551.

Is there any additional information about CVE-2018-6551?

For additional information about CVE-2018-6551, you can refer to the references provided: [NetApp Security Advisory](https://security.netapp.com/advisory/ntap-20190404-0003/), [Bugzilla](https://sourceware.org/bugzilla/show_bug.cgi?id=22774), and [Git Repository](https://sourceware.org/git/?p=glibc.git;a=commit;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22).

Vulnerability/
CVE-2018-6551

critical

9.8

CWE

190 787

2/2/2018

5/8/2024

CVE-2018-6551: Integer Overflow

First published: Fri Feb 02 2018(Updated: )

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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
GNU glibc	>=2.24<=2.26

Remedy

https://sourceware.org/git/?p=glibc.git;a=commit;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the vulnerability CVE-2018-6551?
The vulnerability CVE-2018-6551 is a memory allocation issue in the GNU C Library (glibc) versions 2.24 to 2.26 on powerpc and version 2.26 on i386, which can lead to a smaller heap region being returned than requested.
How severe is CVE-2018-6551?
CVE-2018-6551 has a severity rating of 9.8, which is considered critical.
What software is affected by CVE-2018-6551?
The GNU C Library (glibc) versions 2.24 to 2.26 on powerpc and version 2.26 on i386 are affected by CVE-2018-6551.
How can I fix CVE-2018-6551?
Apply the appropriate patch or update provided by the software vendor to fix CVE-2018-6551.
Is there any additional information about CVE-2018-6551?
For additional information about CVE-2018-6551, you can refer to the references provided: [NetApp Security Advisory](https://security.netapp.com/advisory/ntap-20190404-0003/), [Bugzilla](https://sourceware.org/bugzilla/show_bug.cgi?id=22774), and [Git Repository](https://sourceware.org/git/?p=glibc.git;a=commit;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22).

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agent/last-modified-date
agent/softwarecombine
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collector/mitre-cve
source/MITRE
vendor/gnu
canonical/gnu glibc
version/gnu glibc/2.24
version/gnu glibc/2.26

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