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Message-Id: <20230225154132.240827-1-izbyshev@ispras.ru>
Date: Sat, 25 Feb 2023 18:41:32 +0300
From: Alexey Izbyshev <izbyshev@...ras.ru>
To: musl@...ts.openwall.com
Subject: [PATCH] fix potential read past end of buffer in getnameinfo host name lookup
This is completely analoguous to commit 633183b5d1c2.
Similar code called from __lookup_name is not affected because it checks
that the line contains the host name surrounded by blanks.
---
src/network/getnameinfo.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/network/getnameinfo.c b/src/network/getnameinfo.c
index 949e1811..689b7d11 100644
--- a/src/network/getnameinfo.c
+++ b/src/network/getnameinfo.c
@@ -58,6 +58,7 @@ static void reverse_hosts(char *buf, const unsigned char *a, unsigned scopeid, i
if ((p=strchr(line, '#'))) *p++='\n', *p=0;
for (p=line; *p && !isspace(*p); p++);
+ if (!*p) continue;
*p++ = 0;
if (__lookup_ipliteral(&iplit, line, AF_UNSPEC)<=0)
continue;
--
2.39.1
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