diff options
| author | Roman Arutyunyan <arut@nginx.com> | 2024-10-22 18:34:13 +0400 |
|---|---|---|
| committer | pluknet <pluknet@nginx.com> | 2025-02-05 20:40:47 +0400 |
| commit | e9e83dbb697c17b7ad51d1dd8536ad1c601fdd0e (patch) | |
| tree | c104a816a13e6a2fc9ce3c9a937bc1e7fd1e603b /src/core/ngx_palloc.c | |
| parent | 1ebe58a02e90a65458de0a38c84165b2a37574ed (diff) | |
| download | nginx-e9e83dbb697c17b7ad51d1dd8536ad1c601fdd0e.tar.gz nginx-e9e83dbb697c17b7ad51d1dd8536ad1c601fdd0e.tar.bz2 | |
Mp4: prevent chunk index underflow.
When cropping stsc atom, it's assumed that chunk index is never 0.
Based on this assumption, start_chunk and end_chunk are calculated
by subtracting 1 from it. If chunk index is zero, start_chunk or
end_chunk may underflow, which will later trigger
"start/end time is out mp4 stco chunks" error. The change adds an
explicit check for zero chunk index to avoid underflow and report
a proper error.
Zero chunk index is explicitly banned in ISO/IEC 14496-12, 8.7.4
Sample To Chunk Box. It's also implicitly banned in QuickTime File
Format specification. Description of chunk offset table references
"Chunk 1" as the first table element.
Diffstat (limited to 'src/core/ngx_palloc.c')
0 files changed, 0 insertions, 0 deletions