CVE-2024-22653Public exploit

Assembler crash via NULL pointer dereference

Published May 29, 2025 · Updated May 29, 2025

NULL pointer dereference in Yasm commit 9defefae allows attackers to crash the assembler via a crafted source file. While the NASM parser appends bytecode, yasm_section_bcs_append dereferences a null pointer at section.c line 634, causing a zero-page read. A crafted file must be passed to the local CLI; Debian classifies the result as a crash without security impact.

CVSS severity4.8
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Yasm commit 9defefae allows attackers to crash the assembler via a crafted source file. While the NASM parser appends bytecode, yasm_section_bcs_append dereferences a null pointer at section.c line 634, causing a zero-page read. A crafted file must be passed to the local CLI; Debian classifies the result as a crash without security impact.

The record

CVE
CVE-2024-22653
Published
May 29, 2025
Updated
May 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2025CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3SUSECVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
4.8CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
4.6SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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