ffmpeg | branch: release/2.4 | Michael Niedermayer <mich...@niedermayer.cc> |
Sun Jan 17 18:57:01 2016 +0100| [5d40272ba8fcae15d39422c8ceeae6112735300f] |
committer: Michael Niedermayer
swscale/swscale: Add some sanity checks for srcSlice* parameters
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
(cherry picked from commit 321e85e1769ca1fc1567025ae264760790ee7fc9)
Conflicts:
libswscale/swscale.c
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5d40272ba8fcae15d39422c8ceeae6112735300f
---
libswscale/swscale.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 43b8740..87fd63a 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -895,11 +895,19 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
const uint8_t *src2[4];
uint8_t *dst2[4];
uint8_t *rgb0_tmp = NULL;
+ int macro_height = isBayer(c->srcFormat) ? 2 : (1 << c->chrSrcVSubSample);
if (!srcStride || !dstStride || !dst || !srcSlice) {
av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is
NULL, please check the calling code\n");
return 0;
}
+
+ if ((srcSliceY & (macro_height-1)) ||
+ ((srcSliceH& (macro_height-1)) && srcSliceY + srcSliceH != c->srcH) ||
+ srcSliceY + srcSliceH > c->srcH) {
+ av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n",
srcSliceY, srcSliceH);
+ return AVERROR(EINVAL);
+ }
if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH ==
c->cascaded_context[0]->srcH) {
ret = sws_scale(c->cascaded_context[0],
srcSlice, srcStride, srcSliceY, srcSliceH,
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