diff options
| author | Annie Cherkaev <annie.cherk@gmail.com> | 2017-07-15 15:08:58 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-06 18:59:42 -0700 |
| commit | 7b3a66739ff01fcd9b8007a18ddd29edd2cb74f7 (patch) | |
| tree | 43c16d3d059ecf3ca614d41c6997e54807ec6caa /drivers/isdn/i4l/isdn_common.c | |
| parent | b756862459d2b8a977538e5f61345e3633c51d0f (diff) | |
isdn/i4l: fix buffer overflow
commit 9f5af546e6acc30f075828cb58c7f09665033967 upstream.
This fixes a potential buffer overflow in isdn_net.c caused by an
unbounded strcpy.
[ ISDN seems to be effectively unmaintained, and the I4L driver in
particular is long deprecated, but in case somebody uses this..
- Linus ]
Signed-off-by: Jiten Thakkar <jitenmt@gmail.com>
Signed-off-by: Annie Cherkaev <annie.cherk@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn/i4l/isdn_common.c')
| -rw-r--r-- | drivers/isdn/i4l/isdn_common.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c index 9b856e1890d1..e4c43a17b333 100644 --- a/drivers/isdn/i4l/isdn_common.c +++ b/drivers/isdn/i4l/isdn_common.c @@ -1379,6 +1379,7 @@ isdn_ioctl(struct file *file, uint cmd, ulong arg) if (arg) { if (copy_from_user(bname, argp, sizeof(bname) - 1)) return -EFAULT; + bname[sizeof(bname)-1] = 0; } else return -EINVAL; ret = mutex_lock_interruptible(&dev->mtx); |