| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.4 096/459] libertas: make lbs_ibss_join_existing() return error code on rates overflow | Date | Fri, 14 Feb 2020 10:55:46 -0500 |
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From: Nicolai Stange <nstange@suse.de>
[ Upstream commit 1754c4f60aaf1e17d886afefee97e94d7f27b4cb ]
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() and made it to return on overflow.
However, the aforementioned commit doesn't set the return value accordingly and thus, lbs_ibss_join_existing() would return with zero even though it failed.
Make lbs_ibss_join_existing return -EINVAL in case the bounds check on the number of supplied rates fails.
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> --- 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 68985d7663491..4e3de684928bf 100644 --- a/drivers/net/wireless/marvell/libertas/cfg.c +++ b/drivers/net/wireless/marvell/libertas/cfg.c @@ -1786,6 +1786,7 @@ static int lbs_ibss_join_existing(struct lbs_private *priv, if (rates_max > MAX_RATES) { lbs_deb_join("invalid rates"); rcu_read_unlock(); + ret = -EINVAL; goto out; } rates = cmd.bss.rates; -- 2.20.1
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