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new 3b19a61837 avcodec/vorbisdec: validate windowtype and transformtype
3b19a61837 is described below
commit 3b19a618370488de4ff72657cec4157a3f9fe4a4
Author: Hassan Hany <[email protected]>
AuthorDate: Thu Jan 22 15:31:41 2026 +0200
Commit: michaelni <[email protected]>
CommitDate: Thu Apr 16 10:24:41 2026 +0000
avcodec/vorbisdec: validate windowtype and transformtype
---
libavcodec/vorbisdec.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c
index aff95f44a9..ba99c01307 100644
--- a/libavcodec/vorbisdec.c
+++ b/libavcodec/vorbisdec.c
@@ -908,8 +908,13 @@ static int vorbis_parse_setup_hdr_modes(vorbis_context *vc)
vorbis_mode *mode_setup = &vc->modes[i];
mode_setup->blockflag = get_bits1(gb);
- mode_setup->windowtype = get_bits(gb, 16); //FIXME check
- mode_setup->transformtype = get_bits(gb, 16); //FIXME check
+ mode_setup->windowtype = get_bits(gb, 16);
+ mode_setup->transformtype = get_bits(gb, 16);
+ if (mode_setup->transformtype != 0 || mode_setup->windowtype != 0) {
+ av_log(vc->avctx, AV_LOG_WARNING,
+ "Invalid mode: windowtype %u, transformtype %u (both must
be 0)\n",
+ mode_setup->windowtype, mode_setup->transformtype);
+ }
GET_VALIDATED_INDEX(mode_setup->mapping, 8, vc->mapping_count);
ff_dlog(NULL, " %u mode: blockflag %d, windowtype %d, transformtype
%d, mapping %d\n",
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