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- From 2e7931c27eb15e387da440a37f12437e35b22dd4 Mon Sep 17 00:00:00 2001
- From: Erik de Castro Lopo <erikd@mega-nerd.com>
- Date: Mon, 7 Oct 2019 12:55:58 +1100
- Subject: [PATCH 20/63] libFLAC/bitreader.c: Fix out-of-bounds read
-
- Credit: Oss-Fuzz
- Issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17069
- Testcase: fuzzer_decoder-5670265022840832
- ---
- src/libFLAC/bitreader.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
- --- a/src/libFLAC/bitreader.c
- +++ b/src/libFLAC/bitreader.c
- @@ -864,7 +864,7 @@ 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);
- }
-
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