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authorLinus Torvalds <torvalds@linux-foundation.org>2009-11-19 13:43:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-11-19 13:43:19 -0800
commite6236f781cc7777a2e74d256c478bb07496f35ec (patch)
tree559a5816b803ec3f86dae82bdb9e5d3f9c20deee /net
parent308efab5e231d1510cd35931d87629bf5171caae (diff)
parent1e360a60b24ad8f8685af66fa6de10ce46693a4b (diff)
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr() NFSv4: Fix a cache validation bug which causes getcwd() to return ENOENT
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/addr.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 22e8fd89477..c7450c8f0a7 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -306,24 +306,25 @@ EXPORT_SYMBOL_GPL(rpc_sockaddr2uaddr);
* @sap: buffer into which to plant socket address
* @salen: size of buffer
*
+ * @uaddr does not have to be '\0'-terminated, but strict_strtoul() and
+ * rpc_pton() require proper string termination to be successful.
+ *
* Returns the size of the socket address if successful; otherwise
* zero is returned.
*/
size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
struct sockaddr *sap, const size_t salen)
{
- char *c, buf[RPCBIND_MAXUADDRLEN];
+ char *c, buf[RPCBIND_MAXUADDRLEN + sizeof('\0')];
unsigned long portlo, porthi;
unsigned short port;
- if (uaddr_len > sizeof(buf))
+ if (uaddr_len > RPCBIND_MAXUADDRLEN)
return 0;
memcpy(buf, uaddr, uaddr_len);
- buf[uaddr_len] = '\n';
- buf[uaddr_len + 1] = '\0';
-
+ buf[uaddr_len] = '\0';
c = strrchr(buf, '.');
if (unlikely(c == NULL))
return 0;
@@ -332,9 +333,7 @@ size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
if (unlikely(portlo > 255))
return 0;
- c[0] = '\n';
- c[1] = '\0';
-
+ *c = '\0';
c = strrchr(buf, '.');
if (unlikely(c == NULL))
return 0;
@@ -345,8 +344,7 @@ size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
port = (unsigned short)((porthi << 8) | portlo);
- c[0] = '\0';
-
+ *c = '\0';
if (rpc_pton(buf, strlen(buf), sap, salen) == 0)
return 0;