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libswcale: Fix possible string overflow in test.

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In libswcale/tests/swcale.c, the function fileTest() calls sscanf in
an argument of "%12s" on character srcStr[] and dstStr[], which are
only 12 bytes.  So, if the input string is 12 characters, a
terminating null byte can be written past the end of these arrays.

This bug was found by cppcheck.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b8ed4930618b170de57a9086e1e9892216454684)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Adam Richter 2019-05-12 05:03:25 -07:00 committed by Michael Niedermayer
parent 9f8d2716a6
commit a0966c15b1
1 changed files with 2 additions and 2 deletions
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4
libswscale/tests/swscale.c
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@ -308,10 +308,10 @@ static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
while (fgets(buf, sizeof(buf), fp)) {
struct Results r;
enum AVPixelFormat srcFormat;
char srcStr[12];
char srcStr[13];
int srcW = 0, srcH = 0;
enum AVPixelFormat dstFormat;
char dstStr[12];
char dstStr[13];
int dstW = 0, dstH = 0;
int flags;
int ret;