| Title | GPAC master f1219cde (2026-07-25) Buffer Overflow |
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| Description | A heap-buffer-overflow vulnerability exists in GPAC master (commit f1219cde, 2026-07-25). The issue occurs in the mpgviddmx_process function in filters/reframe_mpgvid.c at line 1190 during MPEG video import via MP4Box -add. When processing a crafted MPEG Part-2 video bitstream, the MPEG video reframer reads past the input buffer (READ of size 1, 0 bytes to the right of a 2-byte region). This is reachable from gf_media_import and may be an incomplete fix for issue #2795. The vulnerability can be triggered with: MP4Box -add poc -new out.mp4. PoC and ASan crash log are available in the GitHub issue report. |
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| Source | ⚠️ https://github.com/gpac/gpac/issues/3806 |
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| User | wsstssw (UID 100468) |
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| Submission | 08/09/2026 14:33 (1 month ago) |
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| Moderation | 09/14/2026 20:00 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 403647 [GPAC up to f1219cde MPEG Video Reframer filters/reframe_mpgvid.c mpgviddmx_process heap-based overflow] |
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| Points | 20 |
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