| Titre | GPAC up to commit f1219cde (2026-07-25) Memory Corruption |
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| Description | A vulnerability was found in GPAC up to commit f1219cde (2026-07-25) and classified as critical. Affected is the function gf_list_count in the file utils/list.c of the component MP4Box. The manipulation via a crafted MP4 file processed with the -nstatx argument leads to a segmentation fault due to use-after-free. It is possible to launch the attack locally. User interaction is required.
Technical Details
- Affected file/function: utils/list.c / gf_list_count
- Vulnerable parameter: Scene command referencing a freed node list during scene graph command application
- Attack vector: Local
- Privileges required: None
- Trigger condition: Processing a crafted MP4 file with "MP4Box -nstatx" causes gf_sg_command_apply to access a node list that was freed by a prior command
Impact
- Confidentiality: Low
- Integrity: Low
- Availability: High
CVSS v3.1
Score: 7.8 (High)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Timeline
- Discovered: 2026-07-27
- Vendor notified: 2026-07-27
- Patch released: 2026-07-28
- Public disclosure: 2026-07-27
Countermeasure
Apply the upstream patch. Properly manage node list lifetimes and nullify references after freeing during scene command application. |
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| La source | ⚠️ https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-SEGV-in-gf_list_count-(Use-After-Free).md |
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| Utilisateur | r1ck9 (UID 97869) |
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| Soumission | 02/08/2026 15:25 (il y a 1 mois) |
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| Modérer | 12/09/2026 18:34 (1 month later) |
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| Statut | Accepté |
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| Entrée VulDB | 403163 [GPAC jusqu’à f1219cde MP4Box utils/list.c gf_list_count buffer overflow] |
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| Points | 20 |
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