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Tue, 23 Dec 2025 04:09:49 +0200 (EET) MIME-Version: 1.0 To: ffmpeg-devel@ffmpeg.org Date: Tue, 23 Dec 2025 02:09:48 -0000 Message-ID: <176645578957.60.13619213666027024997@2cb04c0e5124> Message-ID-Hash: OMWTUKTLOAHIF5NFAZZ2XW4IG3GSBTLB X-Message-ID-Hash: OMWTUKTLOAHIF5NFAZZ2XW4IG3GSBTLB X-MailFrom: code@ffmpeg.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PATCH] avcodec/hevc/sei: Use get_bits64() in decode_nal_sei_3d_reference_displays_info() (PR #21272) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: michaelni via ffmpeg-devel Cc: michaelni Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: PR #21272 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21272 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21272.patch Fixes: Assertion n>=0 && n<=32 failed at ./libavcodec/get_bits.h:426 Fixes: 468435217/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4644127078940672 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer >>From 62c9ff699872e8ff85038e617bfa54e103b07c61 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 22 Dec 2025 23:03:06 +0100 Subject: [PATCH] avcodec/hevc/sei: Use get_bits64() in decode_nal_sei_3d_reference_displays_info() Fixes: Assertion n>=0 && n<=32 failed at ./libavcodec/get_bits.h:426 Fixes: 468435217/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4644127078940672 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevc/sei.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/hevc/sei.c b/libavcodec/hevc/sei.c index 5fd4e763b3..e12803f1d3 100644 --- a/libavcodec/hevc/sei.c +++ b/libavcodec/hevc/sei.c @@ -195,7 +195,7 @@ static int decode_nal_sei_3d_reference_displays_info(HEVCSEITDRDI *s, GetBitCont else length = FFMAX(0, (int)s->exponent_ref_display_width[i] + (int)s->prec_ref_display_width - 31); - s->mantissa_ref_display_width[i] = get_bits_long(gb, length); + s->mantissa_ref_display_width[i] = get_bits64(gb, length); if (s->ref_viewing_distance_flag) { s->exponent_ref_viewing_distance[i] = get_bits(gb, 6); if (s->exponent_ref_viewing_distance[i] > 62) @@ -205,7 +205,7 @@ static int decode_nal_sei_3d_reference_displays_info(HEVCSEITDRDI *s, GetBitCont else length = FFMAX(0, (int)s->exponent_ref_viewing_distance[i] + (int)s->prec_ref_viewing_dist - 31); - s->mantissa_ref_viewing_distance[i] = get_bits_long(gb, length); + s->mantissa_ref_viewing_distance[i] = get_bits64(gb, length); } s->additional_shift_present_flag[i] = get_bits1(gb); if (s->additional_shift_present_flag[i]) { -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org