CVE-2026-32836: CWE-789 Memory allocation with excessive size value in mackron dr_libs dr_flac.h
dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.
AI Analysis
Technical Summary
CVE-2026-32836 is a vulnerability in mackron dr_libs dr_flac.h (<=0.13.3) involving uncontrolled memory allocation in the drflac__read_and_decode_metadata() function. Attackers can supply malicious PICTURE metadata blocks with manipulated mimeLength and descriptionLength fields, causing the function to allocate excessive memory. This results in a denial of service condition due to memory exhaustion during FLAC stream processing. The issue is fixed in commits fefced4, 4f5a4cd, and 663239a, which correspond to versions after 0.13.3.
Potential Impact
An attacker can cause a denial of service by triggering excessive memory allocation, leading to memory exhaustion on the affected system when processing specially crafted FLAC streams. There is no indication of privilege escalation or code execution. The impact is limited to availability degradation.
Mitigation Recommendations
A fix is available in versions after 0.13.3, as indicated by the referenced commits. Users should upgrade to version 0.13.4 or later to remediate this vulnerability. No vendor advisory was provided, so check the project's repository or official sources for the patched versions.
CVE-2026-32836: CWE-789 Memory allocation with excessive size value in mackron dr_libs dr_flac.h
Description
dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.
CVSS v4.0
Score 6.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-32836 is a vulnerability in mackron dr_libs dr_flac.h (<=0.13.3) involving uncontrolled memory allocation in the drflac__read_and_decode_metadata() function. Attackers can supply malicious PICTURE metadata blocks with manipulated mimeLength and descriptionLength fields, causing the function to allocate excessive memory. This results in a denial of service condition due to memory exhaustion during FLAC stream processing. The issue is fixed in commits fefced4, 4f5a4cd, and 663239a, which correspond to versions after 0.13.3.
Potential Impact
An attacker can cause a denial of service by triggering excessive memory allocation, leading to memory exhaustion on the affected system when processing specially crafted FLAC streams. There is no indication of privilege escalation or code execution. The impact is limited to availability degradation.
Mitigation Recommendations
A fix is available in versions after 0.13.3, as indicated by the referenced commits. Users should upgrade to version 0.13.4 or later to remediate this vulnerability. No vendor advisory was provided, so check the project's repository or official sources for the patched versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-03-16T18:11:41.757Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69b9aedc771bdb1749d151f5
Added to database: 03/17/2026, 19:43:24 UTC
Last enriched: 07/30/2026, 00:33:56 UTC
Last updated: 07/31/2026, 21:26:47 UTC
Views: 110
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