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libFLAC/bitreader.c: Fix out-of-bounds read

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Credit: Oss-Fuzz
Issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17069
Testcase: fuzzer_decoder-5670265022840832
This commit is contained in:
Erik de Castro Lopo 2019-10-07 12:55:58 +11:00
parent 6d0e222a6e
commit 2e7931c27e
1 changed files with 1 additions and 1 deletions
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2
src/libFLAC/bitreader.c
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@ -869,7 +869,7 @@ incomplete_lsbs:
cwords = br->consumed_words;
words = br->words;
ucbits = FLAC__BITS_PER_WORD - br->consumed_bits;
b = br->buffer[cwords] << br->consumed_bits;
b = cwords < br->capacity ? br->buffer[cwords] << br->consumed_bits : 0;
} while(cwords >= words && val < end);
}