CVE-2018-6551

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Source
https://cve.org/CVERecord?id=CVE-2018-6551
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-6551.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-6551
Downstream
Related
Published
2018-02-02T14:29:01.590Z
Modified
2026-04-11T21:33:05.390207Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / sourceware.org/git/glibc.git

Affected ranges

Type
GIT
Repo
https://sourceware.org/git/glibc.git
Events
Introduced
fdfc9260b61d3d72541f18104d24c7bcb0ce5ca2
Last affected
1c9a5c270d8b66f30dcfaf1cb2d6cf39d3e18369
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.24"
        },
        {
            "last_affected": "2.26"
        }
    ],
    "source": "CPE_FIELD",
    "cpe": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*"
}

Affected versions

glibc-2.*
glibc-2.24
glibc-2.24.90
glibc-2.25
glibc-2.25.90
glibc-2.26

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-6551.json"