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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-05-27 01:52:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-07-15 01:59:38 +0200 |
| commit | 175c19166824bd93b02f60c5178365014212366e (patch) | |
| tree | 050f03f19face7b4119bc0da5d54d8956d71e92d | |
| parent | 25f9211bdd61641cb8739efcb45bf31b46557178 (diff) | |
| download | ffmpeg-175c19166824bd93b02f60c5178365014212366e.tar.gz | |
avdevice/dshow: Check device_filter_unique_name before use
Fixes: CID1591931 Explicit null dereferenced
Sponsored-by: Sovereign Tech Fund
Reviewed-by: Roger Pack <rogerdpack@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavdevice/dshow.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c index 4d587c936f..5caf282aea 100644 --- a/libavdevice/dshow.c +++ b/libavdevice/dshow.c @@ -1373,7 +1373,7 @@ dshow_open_device(AVFormatContext *avctx, ICreateDevEnum *devenum, if (ctx->device_filter[otherDevType]) { // avoid adding add two instances of the same device to the graph, one for video, one for audio // a few devices don't support this (could also do this check earlier to avoid double crossbars, etc. but they seem OK) - if (strcmp(device_filter_unique_name, ctx->device_unique_name[otherDevType]) == 0) { + if (!device_filter_unique_name || strcmp(device_filter_unique_name, ctx->device_unique_name[otherDevType]) == 0) { av_log(avctx, AV_LOG_DEBUG, "reusing previous graph capture filter... %s\n", device_filter_unique_name); IBaseFilter_Release(device_filter); device_filter = ctx->device_filter[otherDevType]; |