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| author | Stefano Brivio <stefano.brivio@polimi.it> | 2008-01-13 18:30:14 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-01-16 18:53:32 +0100 |
| commit | a38db5b6219d88e2b48f07472c436b19b864f93c (patch) | |
| tree | fc59602d35c56e3f34e303464639a2ae961aa6ba | |
| parent | ipw2200: fix typo in kerneldoc (diff) | |
| download | linux-a38db5b6219d88e2b48f07472c436b19b864f93c.tar.xz linux-a38db5b6219d88e2b48f07472c436b19b864f93c.zip | |
b43: fix use-after-free rfkill bug
Fix rfkill code which caused a use-after-free bug.
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Acked-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/b43/rfkill.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c index 98cf70c5fd47..11f53cb1139e 100644 --- a/drivers/net/wireless/b43/rfkill.c +++ b/drivers/net/wireless/b43/rfkill.c @@ -138,8 +138,11 @@ void b43_rfkill_init(struct b43_wldev *dev) rfk->rfkill->user_claim_unsupported = 1; rfk->poll_dev = input_allocate_polled_device(); - if (!rfk->poll_dev) - goto err_free_rfk; + if (!rfk->poll_dev) { + rfkill_free(rfk->rfkill); + goto err_freed_rfk; + } + rfk->poll_dev->private = dev; rfk->poll_dev->poll = b43_rfkill_poll; rfk->poll_dev->poll_interval = 1000; /* msecs */ @@ -175,8 +178,7 @@ err_unreg_rfk: err_free_polldev: input_free_polled_device(rfk->poll_dev); rfk->poll_dev = NULL; -err_free_rfk: - rfkill_free(rfk->rfkill); +err_freed_rfk: rfk->rfkill = NULL; out_error: rfk->registered = 0; @@ -195,6 +197,5 @@ void b43_rfkill_exit(struct b43_wldev *dev) rfkill_unregister(rfk->rfkill); input_free_polled_device(rfk->poll_dev); rfk->poll_dev = NULL; - rfkill_free(rfk->rfkill); rfk->rfkill = NULL; } |