commit 446ce04bb31a023712f5ff74a6a0649606286662 Author: David Goulet dgoulet@torproject.org Date: Mon Nov 19 10:18:04 2018 -0500

gethostbyaddr_r: always assign result

Originating from: https://bugzilla.redhat.com/show_bug.cgi?id=1601259

Patch by "cHBWyJuH".

Fixes #26794

Signed-off-by: David Goulet dgoulet@torproject.org --- src/lib/gethostbyname.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/src/lib/gethostbyname.c b/src/lib/gethostbyname.c index df84e14..b1b2183 100644 --- a/src/lib/gethostbyname.c +++ b/src/lib/gethostbyname.c @@ -349,6 +349,9 @@ LIBC_GETHOSTBYNAME_R_RET_TYPE tsocks_gethostbyname_r(LIBC_GETHOSTBYNAME_R_SIG) char padding[]; } *data;

+ /* result must be NULL if no entry is found or if an error occurs */ + *result = NULL; + DBG("[gethostbyname_r] Requesting %s hostname", name);

if (!name) { @@ -390,6 +393,9 @@ LIBC_GETHOSTBYNAME_R_RET_TYPE tsocks_gethostbyname_r(LIBC_GETHOSTBYNAME_R_SIG) he->h_length = sizeof(in_addr_t); he->h_addrtype = AF_INET;

+ /* Assign result as specified by the documentation */ + *result = he; + DBG("[gethostbyname_r] Hostname %s resolved to %u.%u.%u.%u", name, ip & 0XFF, (ip >> 8) & 0XFF, (ip >> 16) & 0XFF, (ip >> 24) & 0xFF);