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# HG changeset patch
# User Ryan C. Gordon <icculus@icculus.org>
# Date 1516817527 18000
# Node ID 37445f6180a8ca7a218ab9f9eaaeaf088b4f6c3a
# Parent a1e9b624ca1033f893e93691802682bf36400f7a
bmp: don't overflow palette buffer with bogus biClrUsed values.
diff -r a1e9b624ca10 -r 37445f6180a8 IMG_bmp.c
--- a/IMG_bmp.c Wed Jan 24 13:02:04 2018 -0500
+++ b/IMG_bmp.c Wed Jan 24 13:12:07 2018 -0500
@@ -760,6 +760,11 @@
if (biClrUsed == 0) {
biClrUsed = 1 << biBitCount;
}
+ if (biClrUsed > SDL_arraysize(palette)) {
+ IMG_SetError("Unsupported or incorrect biClrUsed field");
+ was_error = SDL_TRUE;
+ goto done;
+ }
for (i = 0; i < (int) biClrUsed; ++i) {
SDL_RWread(src, &palette[i], 4, 1);
}
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