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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-11-30 23:39:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-13 11:22:31 +0300 |
| commit | f78567a5faf80eb92310bc26da0df35c2ddbba21 (patch) | |
| tree | 1d650bea5f685281878de03b79d181479023bb88 /net/sunrpc | |
| parent | bceb7beeed4aed277b2ec8e0e86b5520a8626ea1 (diff) | |
| download | linux-f78567a5faf80eb92310bc26da0df35c2ddbba21.tar.xz | |
SUNRPC: Fix leak of krb5p encode pages
commit 8dae5398ab1ac107b1517e8195ed043d5f422bd0 upstream.
call_encode can be invoked more than once per RPC call. Ensure that
each call to gss_wrap_req_priv does not overwrite pointers to
previously allocated memory.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/auth_gss/auth_gss.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index 81e29f02d28e..7a0e287be77f 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1721,6 +1721,7 @@ priv_release_snd_buf(struct rpc_rqst *rqstp) for (i=0; i < rqstp->rq_enc_pages_num; i++) __free_page(rqstp->rq_enc_pages[i]); kfree(rqstp->rq_enc_pages); + rqstp->rq_release_snd_buf = NULL; } static int @@ -1729,6 +1730,9 @@ alloc_enc_pages(struct rpc_rqst *rqstp) struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; int first, last, i; + if (rqstp->rq_release_snd_buf) + rqstp->rq_release_snd_buf(rqstp); + if (snd_buf->page_len == 0) { rqstp->rq_enc_pages_num = 0; return 0; |