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avcodec/hevc_parse: check the size of hvcC is at least 23 

The code after the check skip 21 bytes and then read two bytes.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili 2023-06-13 15:37:16 +08:00
parent 372f71cdc7
commit bdb4b64f16
1 changed files with 3 additions and 1 deletions
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4
libavcodec/hevc_parse.c
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@ -88,8 +88,10 @@ int ff_hevc_decode_extradata(const uint8_t *data, int size, HEVCParamSets *ps,
/* data[0] == 1 is configurationVersion from 14496-15.
* data[0] == 0 is for backward compatibility predates the standard.
*
* Minimum number of bytes of hvcC with 0 numOfArrays is 23.
*/
if (size > 3 && ((data[0] == 1) || (data[0] == 0 && (data[1] || data[2] > 1)))) {
if (size >= 23 && ((data[0] == 1) || (data[0] == 0 && (data[1] || data[2] > 1)))) {
/* It seems the extradata is encoded as hvcC format. */
int i, j, num_arrays, nal_len_size;