| Titel | GPAC GPAC (MP4Box) gpac f1219cde (master, 2026-07-25) Use After Free |
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| Beschreibung | Description:
GPAC MP4Box at commit f1219cde contains a heap-use-after-free vulnerability during malformed scene-graph teardown. gf_node_replace unregisters and potentially frees the old node before notifying its parent through gf_node_changed. The subsequent notification accesses scene-graph state containing freed memory, resulting in a read in gf_node_changed_internal.
Reproduction command:
./bin/gcc/MP4Box -add ../pocs/poc_3800 -new /tmp/out.mp4
Expected result:
AddressSanitizer reports a heap-use-after-free READ of size 8 in gf_node_changed_internal at scenegraph/base_scenegraph.c:1892.
Impact:
A crafted scene file can crash MP4Box during cleanup and cause denial of service in media-processing applications handling untrusted input.
PoC:
https://github.com/Ech06/CVE_submit/blob/main/pocs/poc_3800
Issue:
https://github.com/gpac/gpac/issues/3800
Fix:
https://github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24 |
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| Quelle | ⚠️ https://github.com/Ech06/CVE_submit/blob/main/gpac_3800.md |
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| Benutzer | Ech06 (UID 98792) |
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| Einreichung | 03.08.2026 16:53 (vor 1 Monat) |
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| Moderieren | 13.09.2026 06:56 (1 month later) |
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| Status | Akzeptiert |
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| VulDB Eintrag | 403220 [GPAC bis f1219cde MP4Box base_scenegraph.c gf_node_changed_internal Pufferüberlauf] |
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| Punkte | 20 |
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