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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-04 00:44:32 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-28 23:18:55 +0200 |
| commit | ba92c416afdcc1f293c79ce1f57c3ff93dbe1e37 (patch) | |
| tree | bb6d2fdb1f0f4f701a03b4c9a912ae50ab2b1f9c /libavformat | |
| parent | 7a9ea4399d3c617b02d2db00a032fdb1950a0733 (diff) | |
| download | ffmpeg-ba92c416afdcc1f293c79ce1f57c3ff93dbe1e37.tar.gz | |
avformat/utils: Fix invalid NULL pointer operation in ff_parse_key_value()
Fixes: pointer index expression with base 0x000000000000 overflowed to 0xffffffffffffffff
Fixes: 44012/clusterfuzz-testcase-minimized-ffmpeg_dem_HLS_fuzzer-5670607746891776
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 59328aabd2c789ae053e18a62a20a7addfd4d069)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index 940703e87d..cee86ae87b 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1244,7 +1244,7 @@ void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf, key_len = ptr - key; callback_get_buf(context, key, key_len, &dest, &dest_len); - dest_end = dest + dest_len - 1; + dest_end = dest ? dest + dest_len - 1 : NULL; if (*ptr == '\"') { ptr++; |