UBUNTU-CVE-2018-6551

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2018-6551
Published: 02 Feb 2018, 14:29
Last modified:16 Jul 2025, 07:38

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Feb 2018, 14:29
Published
Vulnerability first disclosed
16 Jul 2025, 07:38
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•CRITICAL•Score: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • ubuntu•glibc

    < 2.27-3ubuntu1

References (4)