| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1288545022-16393-1-git-send-email-segooon@gmail.com> Date: Sun, 31 Oct 2010 20:10:22 +0300 From: Vasiliy Kulikov <segooon@...il.com> To: kernel-janitors@...r.kernel.org Cc: Joerg Reuter <jreuter@...na.de>, Ralf Baechle <ralf@...ux-mips.org>, "David S. Miller" <davem@...emloft.net>, linux-hams@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 1/3] net: ax25: fix information leak to userland Sometimes ax25_getname() doesn't initialize all members of fsa_digipeater field of fsa struct. This structure is then copied to userland. It leads to leaking of contents of kernel stack memory. We have to initialize them to zero. Signed-off-by: Vasiliy Kulikov <segooon@...il.com> --- net/ax25/af_ax25.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 26eaebf..a324d83 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -1392,6 +1392,7 @@ static int ax25_getname(struct socket *sock, struct sockaddr *uaddr, ax25_cb *ax25; int err = 0; + memset(&fsa->fsa_digipeater, 0, sizeof(fsa->fsa_digipeater)); lock_sock(sk); ax25 = ax25_sk(sk); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists