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Fix another crash in the protobuf parser ##fuzz

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pancake 2022-09-12 18:56:50 +02:00
parent ada98b4dbb
commit 46ae247470
1 changed files with 4 additions and 0 deletions
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4
libr/util/protobuf.c
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@ -110,6 +110,10 @@ static void decode_buffer(RStrBuf *sb, const ut8* start, const ut8* end, ut32 pa
R_LOG_ERROR ("Invalid delta in var64");
break;
}
if (UT64_ADD_OVFCHK ((size_t)ps, var64)) {
R_LOG_ERROR ("Invalid overflow in var64");
break;
}
const ut8* pe = (const ut8*)ps + var64;
if (ps > buffer && pe <= end) {
if (is_string (ps, pe)) {