Read the docs
TI-2021-20458 Aliases CVE-2021-45257GHSA-wjg5-gfx4-4qv2

An infinite loop vulnerability exists in nasm 2.16rc0 via the gpaste_tokens function.

Priority LOW 26CWE-835Published · 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
Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-835.

Summary

An infinite loop vulnerability exists in nasm 2.16rc0 via the gpaste_tokens function.

Why it matters now

EPSS 0.0069 53rd percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

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:rc0:*:*:*:*:*:*2.16 rc0VulnerableNASM
  • cpe:2.3:a:nasm:netwide_assembler:2.16:rc0:*:*:*:*:*:* Versions 2.16 rc0 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 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-45257
  2. 2026-10-03 Alias added: GHSA-wjg5-gfx4-4qv2

References

Other 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-2023-20017 Stack-based buffer over-read in disasm in nasm 2.16 allows attackers to cause a denial of service (crash). CVSS 3.1MEDIUM 5.5
  • 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
See all 74 →

Sources

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