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Fix #18604 - UB in left shift parsing uleb128 (#18605)

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pancake 2021-04-21 11:29:33 +02:00 committed by GitHub
parent ba10740fe5
commit 1721ebf558
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1 changed files with 5 additions and 1 deletions
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6
libr/util/uleb128.c
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@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2014-2015 - pancake */
/* radare - LGPL - Copyright 2014-2021 - pancake */
#include "r_util/r_str.h"
#include <r_util.h>
@ -124,6 +124,10 @@ R_API const ut8 *r_leb128(const ut8 *data, int datalen, st64 *v) {
}
while (data < data_end) {
c = *(data++) & 0x0ff;
if (s > 56) {
// (127 << 56) max for st64
break;
}
sum |= ((st64) (c & 0x7f) << s);
s += 7;
if (!(c & 0x80)) {