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commit 28d9c6b7d2c12d895bc7d78bc86848a48c633435
Author: NRK <[email protected]>
AuthorDate: Sat Jun 17 14:30:42 2023 +0600
Y4M loader: check file size before magic check
---
src/modules/loaders/loader_y4m.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/modules/loaders/loader_y4m.c b/src/modules/loaders/loader_y4m.c
index c64cd40..b819895 100644
--- a/src/modules/loaders/loader_y4m.c
+++ b/src/modules/loaders/loader_y4m.c
@@ -26,6 +26,7 @@ _load(ImlibImage * im, int load_data)
int rc = LOAD_FAIL;
int broken_image = 0;
uint32_t *ptr = NULL;
+ const uint8_t magic[10] = "YUV4MPEG2 ";
/* we do not support the file being loaded from memory */
if (!im->fi->fp)
@@ -34,7 +35,8 @@ _load(ImlibImage * im, int load_data)
/* guess whether this is a y4m file */
const char *fptr = im->fi->fdata;
- if (strncmp(fptr, "YUV4MPEG2 ", 10) != 0)
+ if (im->fi->fsize < (int)sizeof(magic) ||
+ memcmp(fptr, magic, sizeof(magic)) != 0)
goto quit;
/* format accepted */
--
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