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dbms: fix IPv6NumToString out of bounds access. [#METR-13151]

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This commit is contained in:
Andrey Mironov 2014-10-29 16:52:39 +03:00
parent fcb5422dcf
commit 74b2f521d0
1 changed files with 2 additions and 2 deletions
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4
dbms/include/DB/Functions/FunctionsCoding.h
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@ -88,9 +88,9 @@ public:
auto begin = reinterpret_cast<char *>(&vec_res[0]);
auto pos = begin;
for (size_t i = 0; i < vec_in.size(); i += ipv6_fixed_string_length)
for (size_t offset = 0, i = 0; offset < vec_in.size(); offset += ipv6_fixed_string_length, ++i)
{
inet_ntop(AF_INET6, &vec_in[i], pos, INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, &vec_in[offset], pos, INET6_ADDRSTRLEN);
pos = static_cast<char *>(memchr(pos, 0, INET6_ADDRSTRLEN)) + 1;
offsets_res[i] = pos - begin;
}