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-rw-r--r--lib/decompress_unlzma.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/decompress_unlzma.c b/lib/decompress_unlzma.c
index f30c899241ef..476c65af9709 100644
--- a/lib/decompress_unlzma.c
+++ b/lib/decompress_unlzma.c
@@ -522,6 +522,9 @@ static inline int INIT process_bit1(struct writer *wr, struct rc *rc,
cst->rep0 = pos_slot;
if (++(cst->rep0) == 0)
return 0;
+ if (cst->rep0 > wr->header->dict_size
+ || cst->rep0 > get_pos(wr))
+ return -1;
}
len += LZMA_MATCH_MIN_LEN;

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