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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.

PUBLISHED Reserved 2026-03-16 | Published 2026-03-17 | Updated 2026-04-29 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-789 Memory allocation with excessive size value

Product status

Default status
unknown

Any version
affected

fefced4a64adfb1a68a2d31d882366e56096dee8 (git)
unaffected

4f5a4cd3b57564d969443c580c75857e039f100a (git)
unaffected

663239a3d0460c33bd5b6e5166edcb404e3df676 (git)
unaffected

Credits

Ana Kapulica finder

References

github.com/mackron/dr_libs/issues/298 issue-tracking

github.com/...ommit/fefced4a64adfb1a68a2d31d882366e56096dee8 patch

github.com/...ommit/4f5a4cd3b57564d969443c580c75857e039f100a patch

github.com/...ommit/663239a3d0460c33bd5b6e5166edcb404e3df676 patch

www.vulncheck.com/...-allocation-in-picture-metadata-parsing third-party-advisory

cve.org (CVE-2026-32836)

nvd.nist.gov (CVE-2026-32836)

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