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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-04 00:44:32 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-16 20:09:34 +0100 |
| commit | 73ca8b9a029b706cb09b6a65968bcff829a705ed (patch) | |
| tree | c53602b7dd74e24ab40ca1f70937cbc20f02c693 | |
| parent | 28a1cc81382885b2c9f086d3b954c4ea7ad54f0e (diff) | |
| download | ffmpeg-73ca8b9a029b706cb09b6a65968bcff829a705ed.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>
| -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 116c7f8d9a..28a3cfffd6 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -4643,7 +4643,7 @@ 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++; |