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io-png.c (png_row_callback): Check that row_num is valid.

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This commit is contained in:
Matthias Clasen
2001-08-30 07:21:13 +00:00
parent 97d9916904
commit 29c0d6fa32
2 changed files with 15 additions and 0 deletions
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11
gdk-pixbuf/io-png.c
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@ -563,6 +563,17 @@ png_row_callback (png_structp png_read_ptr,
if (lc->fatal_error_occurred)
return;
if (row_num < 0 || row_num >= lc->pixbuf->height) {
lc->fatal_error_occurred = TRUE;
if (lc->error && *lc->error == NULL) {
g_set_error (lc->error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
_("Fatal error reading PNG image file"));
}
return;
}
if (lc->first_row_seen_in_chunk < 0) {
lc->first_row_seen_in_chunk = row_num;
lc->first_pass_seen_in_chunk = pass_num;