Process crash via MP4 NALU double free
Published Jul 6, 2026 · Updated Jul 6, 2026
Double free in the MP4Box component of GPAC 2.5-DEV allows local users to crash the process by concatenating a crafted MP4 file. On the error path in gf_isom_nalu_sample_rewrite, nalu_out_bs reaches later teardown without the buffer-detaching call, so gf_bs_del frees an already freed buffer. Local access to invoke MP4Box -cat with attacker-controlled input is required; the demonstrated consequence is an abort, with no reported data disclosure or code execution.
Summary
What happened
Double free in the MP4Box component of GPAC 2.5-DEV allows local users to crash the process by concatenating a crafted MP4 file. On the error path in gf_isom_nalu_sample_rewrite, nalu_out_bs reaches later teardown without the buffer-detaching call, so gf_bs_del frees an already freed buffer. Local access to invoke MP4Box -cat with attacker-controlled input is required; the demonstrated consequence is an abort, with no reported data disclosure or code execution.
The record
- CVE
- CVE-2025-15667
- Published
- Jul 6, 2026
- Updated
- Jul 6, 2026
- Vendor
- GPAC Project
- Product
- GPAC
- Classifications
- CWE-415, CWE-119, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 6, 2026CVE publishedPublication date reported by the CVE source.
- Jul 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.5-DEV
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- poc-gpac-1proof of concept · demonstrated
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Technologies
Your stack
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Your stack
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