blob: 0a0c073df47514f58f9d965b6b407d096ec6da2b (
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diff --git a/third_party/libjpeg/jdmarker.c b/third_party/libjpeg/jdmarker.c
index f4cca8c..c9325af 100644
--- a/third_party/libjpeg/jdmarker.c
+++ b/third_party/libjpeg/jdmarker.c
@@ -342,6 +342,12 @@ get_sos (j_decompress_ptr cinfo)
TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,
compptr->dc_tbl_no, compptr->ac_tbl_no);
+
+ /* This CSi (cc) should differ from the previous CSi */
+ for (ci = 0; ci < i; ci++) {
+ if (cinfo->cur_comp_info[ci] == compptr)
+ ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
+ }
}
/* Collect the additional scan parameters Ss, Se, Ah/Al. */
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