PR #21751 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21751 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21751.patch
Fixes: negation of -9223372036854775808 cannot be represented in type 'int64_t' (aka 'long'); cast to an unsigned type to negate this value to itself Fixes: 471604230/clusterfuzz-testcase-minimized-ffmpeg_dem_LRC_fuzzer-5474264750030848 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> >From 3fe5142293c5040f15fe2444270eafdffc48736c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Sat, 14 Feb 2026 00:26:23 +0100 Subject: [PATCH] avformat/lrcdec: Check ss for finiteness Fixes: negation of -9223372036854775808 cannot be represented in type 'int64_t' (aka 'long'); cast to an unsigned type to negate this value to itself Fixes: 471604230/clusterfuzz-testcase-minimized-ffmpeg_dem_LRC_fuzzer-5474264750030848 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavformat/lrcdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/lrcdec.c b/libavformat/lrcdec.c index b323c59f59..1f96305693 100644 --- a/libavformat/lrcdec.c +++ b/libavformat/lrcdec.c @@ -89,7 +89,7 @@ static int64_t read_ts(const char *p, int64_t *start) return 0; } int ret = av_sscanf(p, "%2[[-]%"SCNu32":%lf]", prefix, &mm, &ss); - if (ret != 3 || prefix[0] != '[' || ss < 0 || ss > 60) { + if (ret != 3 || prefix[0] != '[' || ss < 0 || ss > 60 || !isfinite(ss)) { return 0; } *start = llrint((mm * 60 + ss) * AV_TIME_BASE); -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
