| Message ID | 1366796198-7423-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index ef5356c..0262210 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -161,6 +161,8 @@ static int hash_recvmsg(struct kiocb *unused, struct socket *sock, else if (len < ds) msg->msg_flags |= MSG_TRUNC; + msg->msg_namelen = 0; + lock_sock(sk); if (ctx->more) { ctx->more = 0; diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 6a6dfc0..a1c4f0a 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -432,6 +432,7 @@ static int skcipher_recvmsg(struct kiocb *unused, struct socket *sock, long copied = 0; lock_sock(sk); + msg->msg_namelen = 0; for (iov = msg->msg_iov, iovlen = msg->msg_iovlen; iovlen > 0; iovlen--, iov++) { unsigned long seglen = iov->iov_len;
This is a note to let you know that I have just added a patch titled crypto: algif - suppress sending source address information to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 295f5324f29eb8253463827247aadacc502dd05d Mon Sep 17 00:00:00 2001 From: Mathias Krause <minipli@googlemail.com> Date: Sun, 7 Apr 2013 14:05:39 +0200 Subject: [PATCH] crypto: algif - suppress sending source address information in recvmsg commit 72a763d805a48ac8c0bf48fdb510e84c12de51fe upstream. The current code does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- crypto/algif_hash.c | 2 ++ crypto/algif_skcipher.c | 1 + 2 files changed, 3 insertions(+) -- 1.8.1.2