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| author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2014-07-13 01:44:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-13 02:21:47 +0200 |
| commit | 07584d4a356ef52c084e1e4fedc22858ffc2f8b2 (patch) | |
| tree | e9d1e2f4570ff89f9ae770c4df9e541e569533c7 | |
| parent | drivers: tty: Merge alloc_tty_struct and initialize_tty_struct (diff) | |
| download | linux-07584d4a356ef52c084e1e4fedc22858ffc2f8b2.tar.xz linux-07584d4a356ef52c084e1e4fedc22858ffc2f8b2.zip | |
drivers: tty: Fix use-after-free in pty_common_install
In 2c964a2f "drivers: tty: Merge alloc_tty_struct and
initialize_tty_struct", I messed up the refactorization of
pty_common_install, causing use-after-free and NULL pointer derefs on
various error paths. This should fix it.
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/pty.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index ac723e3c031a..9bbdb1de12e2 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -388,7 +388,7 @@ err_deinit_tty: deinitialize_tty_struct(o_tty); free_tty_struct(o_tty); err_put_module: - module_put(o_tty->driver->owner); + module_put(driver->other->owner); err: kfree(ports[0]); kfree(ports[1]); |