From 275735d0354e39c0ac1dc3c0db2120d6f31d1990 Mon Sep 17 00:00:00 2001 From: Even Rouault Date: Mon, 27 Jun 2022 16:09:43 +0200 Subject: [PATCH] _TIFFCheckFieldIsValidForCodec(): return FALSE when passed a codec-specific tag and the codec is not configured (fixes #433) This avoids crashes when querying such tags --- libtiff/tif_dirinfo.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libtiff/tif_dirinfo.c b/libtiff/tif_dirinfo.c index c30f569b..3371cb5c 100644 --- a/libtiff/tif_dirinfo.c +++ b/libtiff/tif_dirinfo.c @@ -1191,6 +1191,9 @@ _TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag) default: return 1; } + if( !TIFFIsCODECConfigured(tif->tif_dir.td_compression) ) { + return 0; + } /* Check if codec specific tags are allowed for the current * compression scheme (codec) */ switch (tif->tif_dir.td_compression) { -- GitLab