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TI-2023-20017 Aliases CVE-2023-38668GHSA-5w7j-r72q-24v8

Stack-based buffer over-read in disasm in nasm 2.16 allows attackers to cause a denial of service (crash).

Priority MEDIUM 58CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Will not fix Red Hat: no fix planned

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

Stack-based buffer over-read in disasm in nasm 2.16 allows attackers to cause a denial of service (crash).

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nasm:netwide_assembler:2.16:*:*:*:*:*:*:*2.16VulnerableNASM
  • cpe:2.3:a:nasm:netwide_assembler:2.16:*:*:*:*:*:*:* Versions 2.16 Vulnerable ·NASM

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-38668
  2. 2026-10-03 Alias added: GHSA-5w7j-r72q-24v8

References

Exploit 1

  • TI-2026-05320 Use after free in NASM CVSS 3.1CRITICAL 9.6
  • TI-2026-05321 Out-of-bounds write in NASM CVSS 3.1HIGH 7.5
  • TI-2026-05319 Out-of-bounds write in NASM CVSS 3.1HIGH 7.5
  • TI-2004-01165 Buffer overflow in the error function in preproc.c for NASM 0.98.38 1.2 allows attackers… CVSS 2.0HIGH 10.0
  • TI-2023-20016 Stack-based buffer over-read in function disasm in nasm 2.16 allows attackers to cause a denial of service. CVSS 3.1MEDIUM 5.5
  • TI-2023-20014 Null pointer dereference in ieee_write_file in nasm 2.16rc0 allows attackers to cause a denial of service (crash). CVSS 3.1MEDIUM 5.5
See all 74 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences