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* #27201: libiax: avoid out of bounds read in a more obvious way

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Tristan Matthews
2013-07-12 15:02:27 -04:00
parent 3e1545b41a
commit a969ebaee9
1 changed files with 2 additions and 2 deletions
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4
daemon/libs/iax2/jitterbuf.c
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@ -239,7 +239,7 @@ static void history_calc_maxbuf(jitterbuf *jb)
if (toins > jb->hist_maxbuf[j]) { if (toins > jb->hist_maxbuf[j]) {
/* move over if there's space */ /* move over if there's space */
const size_t slide = (JB_HISTORY_MAXBUF_SZ - (j + 1)) * sizeof(jb->hist_maxbuf[0]); const size_t slide = (JB_HISTORY_MAXBUF_SZ - (j + 1)) * sizeof(jb->hist_maxbuf[0]);
if (slide > 0) if (j < (JB_HISTORY_MAXBUF_SZ - 1))
memmove(jb->hist_maxbuf + j + 1, jb->hist_maxbuf + j, slide); memmove(jb->hist_maxbuf + j + 1, jb->hist_maxbuf + j, slide);
/* insert */ /* insert */
jb->hist_maxbuf[j] = toins; jb->hist_maxbuf[j] = toins;
@ -258,7 +258,7 @@ static void history_calc_maxbuf(jitterbuf *jb)
if (toins < jb->hist_minbuf[j]) { if (toins < jb->hist_minbuf[j]) {
/* move over if there's space */ /* move over if there's space */
const size_t slide = (JB_HISTORY_MAXBUF_SZ - (j + 1)) * sizeof(jb->hist_minbuf[0]); const size_t slide = (JB_HISTORY_MAXBUF_SZ - (j + 1)) * sizeof(jb->hist_minbuf[0]);
if (slide > 0) if (j < (JB_HISTORY_MAXBUF_SZ - 1))
memmove(jb->hist_minbuf + j + 1, jb->hist_minbuf + j, slide); memmove(jb->hist_minbuf + j + 1, jb->hist_minbuf + j, slide);
/* insert */ /* insert */
jb->hist_minbuf[j] = toins; jb->hist_minbuf[j] = toins;