UBUNTU-CVE-2017-17426

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Source
https://ubuntu.com/security/CVE-2017-17426
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-17426.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-17426
Upstream
Downstream
Related
Withdrawn
2025-07-18T16:44:16Z
Published
2017-12-05T00:00:00Z
Modified
2025-07-16T07:36:24.187378Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:18.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.27-3ubuntu1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.27-3ubuntu1

Affected versions

2.*

2.26-0ubuntu2
2.26-0ubuntu2.1
2.27-0ubuntu2
2.27-0ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-armel-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-udeb",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "multiarch-support",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.27-3ubuntu1"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.27-3ubuntu1"
        }
    ]
}