diff options
| author | Nicolai Stange <nstange@suse.de> | 2020-01-14 11:39:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:30:02 -0500 |
| commit | 03b4aeda9b6f455d81d1147f0900f1320bc48a44 (patch) | |
| tree | 7325f1aeee3e0e1fc4ec34eeddce3edd1c85745a | |
| parent | 4dd90d14f902074f18238dc104868debbd3cd250 (diff) | |
libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held
[ Upstream commit c7bf1fb7ddca331780b9a733ae308737b39f1ad4 ]
Commit e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss
descriptor") introduced a bounds check on the number of supplied rates to
lbs_ibss_join_existing().
Unfortunately, it introduced a return path from within a RCU read side
critical section without a corresponding rcu_read_unlock(). Fix this.
Fixes: e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss descriptor")
Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/wireless/libertas/cfg.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c index 0824697c3dca..803684eed142 100644 --- a/drivers/net/wireless/libertas/cfg.c +++ b/drivers/net/wireless/libertas/cfg.c @@ -1853,6 +1853,7 @@ static int lbs_ibss_join_existing(struct lbs_private *priv, rates_max = rates_eid[1]; if (rates_max > MAX_RATES) { lbs_deb_join("invalid rates"); + rcu_read_unlock(); goto out; } rates = cmd.bss.rates; |