Fixes: signed integer overflow: 9223372036854775807 - -30069403896 cannot be represented in type 'long' Fixes: 30046/clusterfuzz-testcase-minimized-ffmpeg_dem_FITS_fuzzer-5807144773484544
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/fits.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/fits.c b/libavcodec/fits.c index 25c33e06c8..97fa7abe80 100644 --- a/libavcodec/fits.c +++ b/libavcodec/fits.c @@ -205,8 +205,12 @@ int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t } else if (!strcmp(keyword, "GROUPS") && sscanf(value, "%c", &c) == 1) { header->groups = (c == 'T'); } else if (!strcmp(keyword, "GCOUNT") && sscanf(value, "%"SCNd64"", &t) == 1) { + if (t < 0 || t > INT_MAX) + return AVERROR_INVALIDDATA; header->gcount = t; } else if (!strcmp(keyword, "PCOUNT") && sscanf(value, "%"SCNd64"", &t) == 1) { + if (t < 0 || t > INT_MAX) + return AVERROR_INVALIDDATA; header->pcount = t; } dict_set_if_not_null(metadata, keyword, value); -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
