| 제목 | GPAC up to commit f1219cde (2026-07-25) NULL Pointer Dereference |
|---|
| 설명 | A vulnerability was found in GPAC up to commit f1219cde (2026-07-25) and classified as problematic. Affected is the function gf_sg_mfurl_del in the file scenegraph/vrml_tools.c (line 916) of the component MP4Box. The manipulation via a crafted MP4 file processed with the -nstatx argument leads to a null pointer dereference. It is possible to launch the attack locally. User interaction is required.
Technical Details
- Affected file/function: scenegraph/vrml_tools.c:916 / gf_sg_mfurl_del
- Vulnerable parameter: embedded MPEG-4 BIFS scene graph node (SBVCAnimation URL field)
- Attack vector: Local
- Privileges required: None
- Trigger condition: Processing a crafted MP4 file with "MP4Box -nstatx" causes SBVCAnimation_Del to call gf_sg_mfurl_del which dereferences a NULL SFURL pointer during node teardown
Impact
- Confidentiality: None
- Integrity: None
- Availability: High
CVSS v3.1
Score: 5.5 (Medium)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 fix. Add NULL pointer check in gf_sg_mfurl_del before dereferencing SFURL pointer. |
|---|
| 원천 | ⚠️ https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-gf_sg_mfurl_del-NULL-Pointer-Dereference.md |
|---|
| 사용자 | r1ck9 (UID 97869) |
|---|
| 제출 | 2026. 08. 01. PM 04:47 (1 월 ago) |
|---|
| 모더레이션 | 2026. 09. 12. PM 06:17 (1 month later) |
|---|
| 상태 | 수락 |
|---|
| VulDB 항목 | 403158 [GPAC 까지 f1219cde MP4Box scenegraph/vrml_tools.c gf_sg_mfurl_del 서비스 거부] |
|---|
| 포인트들 | 20 |
|---|