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| author | Young Xiao <YangX92@hotmail.com> | 2019-04-12 10:24:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-10 18:53:15 +0300 |
| commit | 2c33156b2d2f5efe820d8efdd610fb168c9acf72 (patch) | |
| tree | 1a59d9779903ad63dd8d037b702cbb3690d2d663 | |
| parent | 07b7b1c823d602d0e5d3596387d7f0e67a7e9b5e (diff) | |
| download | linux-2c33156b2d2f5efe820d8efdd610fb168c9acf72.tar.xz | |
Bluetooth: hidp: fix buffer overflow
commit a1616a5ac99ede5d605047a9012481ce7ff18b16 upstream.
Struct ca is copied from userspace. It is not checked whether the "name"
field is NULL terminated, which allows local users to obtain potentially
sensitive information from kernel stack memory, via a HIDPCONNADD command.
This vulnerability is similar to CVE-2011-1079.
Signed-off-by: Young Xiao <YangX92@hotmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/bluetooth/hidp/sock.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c index 008ba439bd62..cc80c76177b6 100644 --- a/net/bluetooth/hidp/sock.c +++ b/net/bluetooth/hidp/sock.c @@ -76,6 +76,7 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long sockfd_put(csock); return err; } + ca.name[sizeof(ca.name)-1] = 0; err = hidp_connection_add(&ca, csock, isock); if (!err && copy_to_user(argp, &ca, sizeof(ca))) |