UBUNTU-CVE-2017-17426

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2017-17426
Downstream
USN-3534-1
Published: 05 Dec 2017, 00:00
Last modified:04 Feb 2026, 02:33

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Dec 2017, 00:00
Published
Vulnerability first disclosed
04 Feb 2026, 02:33
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.0•HIGH•Score: 8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • ubuntu•glibc

    < 2.27-3ubuntu1

References (5)