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-rw-r--r--libavcodec/sanm.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/sanm.c b/libavcodec/sanm.c
index f217ef36bb..e6e866ef8e 100644
--- a/libavcodec/sanm.c
+++ b/libavcodec/sanm.c
@@ -732,6 +732,11 @@ static int process_frame_obj(SANMVideoContext *ctx)
w = bytestream2_get_le16u(&ctx->gb);
h = bytestream2_get_le16u(&ctx->gb);
+ if (!w || !h) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "dimensions are invalid\n");
+ return AVERROR_INVALIDDATA;
+ }
+
if (ctx->width < left + w || ctx->height < top + h) {
if (av_image_check_size(FFMAX(left + w, ctx->width),
FFMAX(top + h, ctx->height), 0, ctx->avctx) < 0)