From 2f59648aed8ba538e2ff3cd7edcb85f4501faa25 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Sun, 24 Mar 2024 16:10:16 +0100 Subject: [PATCH] avcodec/wavpack: Fix leak and segfault on reallocation error av_realloc_f() frees the buffer it is given on allocation failure. But in this case, the buffer is an array of ownership pointers, causing leaks on error. Furthermore, the count of pointers is unchanged on error and the codec's close function uses it to free said ownership pointers, causing a NPD. This is a regression since 46412a8935e4632b2460988bfce4152c7dccce22. Fix this by switching to av_realloc_array(). Signed-off-by: Andreas Rheinhardt --- libavcodec/wavpack.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 7e60a1456a..36bd4662e8 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -973,9 +973,11 @@ static inline int wv_unpack_mono(WavpackFrameContext *s, GetBitContext *gb, static av_cold int wv_alloc_frame_context(WavpackContext *c) { - c->fdec = av_realloc_f(c->fdec, c->fdec_num + 1, sizeof(*c->fdec)); - if (!c->fdec) + WavpackFrameContext **fdec = av_realloc_array(c->fdec, c->fdec_num + 1, sizeof(*c->fdec)); + + if (!fdec) return -1; + c->fdec = fdec; c->fdec[c->fdec_num] = av_mallocz(sizeof(**c->fdec)); if (!c->fdec[c->fdec_num])