[lkml]   [2020]   [Jan]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 1/2] libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held
Commit e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss
descriptor") introduced a bounds check on the number of supplied rates to

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
Signed-off-by: Nicolai Stange <>
drivers/net/wireless/marvell/libertas/cfg.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/marvell/libertas/cfg.c b/drivers/net/wireless/marvell/libertas/cfg.c
index c9401c121a14..68985d766349 100644
--- a/drivers/net/wireless/marvell/libertas/cfg.c
+++ b/drivers/net/wireless/marvell/libertas/cfg.c
@@ -1785,6 +1785,7 @@ 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;
 \ /
  Last update: 2020-01-14 11:40    [W:0.063 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site