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No exploitation reported

CVE-2018-20543

No exploitation reported by the sources we read.

  • Published2018-12-28
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

There is an attempted excessive memory allocation at libxsmm_sparse_csc_reader in generator_spgemm_csc_reader.c in LIBXSMM 1.10 that will cause a denial of service.

Timeline

dates in UTC
  1. 2018-12-2816:29CVE publishedNVD

Versions per branch

NVD
Libxsmm project libxsmm
BranchAffectedFixed in
1.10= 1.10no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libxsmmDebian:13all versions · no fixed version listed
  • libxsmmDebian:12all versions · no fixed version listed

Vendor advisories

  • CVE-2018-20543 Red Hat Product Security

    libxsmm: Resource Exhaustion in libxsmm_sparse_csc_reader in generator_spgemm_csc_reader.c

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2018-12-28
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8g8j-64gv-v6ch

Frequently asked questions

What is CVE-2018-20543?

There is an attempted excessive memory allocation at libxsmm_sparse_csc_reader in generator_spgemm_csc_reader.c in LIBXSMM 1.10 that will cause a denial of service.

Is CVE-2018-20543 actively exploited?

Active exploitation of CVE-2018-20543 has not been confirmed. Its EPSS score was 1.0% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20543?

CVE-2018-20543 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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Sources for this record