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| author | Young Xiao <YangX92@hotmail.com> | 2019-04-12 15:24:30 +0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-06-20 18:11:27 +0100 |
| commit | acaf43aa7ede1e500532f1f5d910e207f89d5e1f (patch) | |
| tree | bc08ae7c8895ddde4db5a5fb0bdc341c6e962f11 | |
| parent | 13c4be25bdcbe5045f9b17ad875c3253a4888e45 (diff) | |
| download | linux-rt-acaf43aa7ede1e500532f1f5d910e207f89d5e1f.tar.gz | |
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -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 cb3fdde1968a..322047f9d038 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))) |