CVE-2014-9709

Community BUG:

Community CODE:

Below is the community patch.

diff --git a/ext/gd/libgd/gd_gif_in.c b/ext/gd/libgd/gd_gif_in.c

index ee88a2f..491e942 100644

--- a/ext/gd/libgd/gd_gif_in.c

+++ b/ext/gd/libgd/gd_gif_in.c

@@ -72,8 +72,10 @@ static struct {

#define STACK_SIZE ((1<<(MAX_LWZ_BITS))*2)

+#define CSD_BUF_SIZE 280

+

typedef struct {

- unsigned char buf[280];

+ unsigned char buf[CSD_BUF_SIZE];

int curbit, lastbit, done, last_byte;

} CODE_STATIC_DATA;

@@ -400,7 +402,12 @@ GetCode_(gdIOCtx *fd, CODE_STATIC_DATA *scd, int code_size, int flag, int *ZeroD

ret = 0;

for (i = scd->curbit, j = 0; j < code_size; ++i, ++j)

- ret |= ((scd->buf[ i / 8 ] & (1 << (i % 8))) != 0) << j;

+ if (i < CSD_BUF_SIZE * 8) {

+ ret |= ((scd->buf[i / 8] & (1 << (i % 8))) != 0) << j;

+ } else {

+ ret = -1;

+ break;

+ }

scd->curbit += code_size;

return ret;