From: Gautam Ramakrishnan <gautamr...@gmail.com>
Bug #8255 points out a double free error in libwscale/utils.c file.
The double free is because the pointer to cascaded_context of an
sw_context is not set to NULL after freeing it. When the sw_context
is later freed, sws_freeContext is called on the cascaded_context,
causing a double free.
---
libswscale/utils.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libswscale/utils.c b/libswscale/utils.c
index b2c08a5983..e9c66aeb4f 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -1502,6 +1502,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter
*srcFilter,
ff_free_filters(c2);
if (ff_init_filters(c2) < 0) {
sws_freeContext(c2);
+ c->cascaded_context[1] = NULL;
return -1;
}
--
2.17.1
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