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Bug#48983: Bad strmake calls (length one too long)

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The problem is a somewhat common misusage of the strmake function.
The strmake(dst, src, len) function writes at most /len/ bytes to
the string pointed to by src, not including the trailing null byte.
Hence, if /len/ is the exact length of the destination buffer, a
one byte buffer overflow can occur if the length of the source
string is equal to or greater than /len/.
This commit is contained in:
Davi Arnaut
2009-12-17 15:58:38 -02:00
parent 0f73979084
commit b9380f0e76
12 changed files with 22 additions and 19 deletions
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2
server-tools/instance-manager/listener.cc
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@@ -331,7 +331,7 @@ create_unix_socket(struct sockaddr_un &unix_socket_address)
unix_socket_address.sun_family= AF_UNIX;
strmake(unix_socket_address.sun_path, options.socket_file_name,
sizeof(unix_socket_address.sun_path));
sizeof(unix_socket_address.sun_path) - 1);
unlink(unix_socket_address.sun_path); // in case we have stale socket file
/*