linux-kernel - [PATCH 3.16 110/148] iwlwifi: check kasprintf() return value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <lsq.1581185940.28073388@decadent.org.uk>
Date:   Sat, 08 Feb 2020 18:20:49 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Johannes Berg" <johannes.berg@...el.com>,
        "Luca Coelho" <luciano.coelho@...el.com>
Subject: [PATCH 3.16 110/148] iwlwifi: check kasprintf() return value

3.16.82-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johannes Berg <johannes.berg@...el.com>

commit 5974fbb5e10b018fdbe3c3b81cb4cc54e1105ab9 upstream.

kasprintf() can fail, we should check the return value.

Fixes: 5ed540aecc2a ("iwlwifi: use mac80211 throughput trigger")
Fixes: 8ca151b568b6 ("iwlwifi: add the MVM driver")
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
[bwh: Backported to 3.16: adjust filenames]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/wireless/iwlwifi/dvm/led.c | 3 +++
 drivers/net/wireless/iwlwifi/mvm/led.c | 3 +++
 2 files changed, 6 insertions(+)

--- a/drivers/net/wireless/iwlwifi/dvm/led.c
+++ b/drivers/net/wireless/iwlwifi/dvm/led.c
@@ -184,6 +184,9 @@ void iwl_leds_init(struct iwl_priv *priv
 
 	priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
 				   wiphy_name(priv->hw->wiphy));
+	if (!priv->led.name)
+		return;
+
 	priv->led.brightness_set = iwl_led_brightness_set;
 	priv->led.blink_set = iwl_led_blink_set;
 	priv->led.max_brightness = 1;
--- a/drivers/net/wireless/iwlwifi/mvm/led.c
+++ b/drivers/net/wireless/iwlwifi/mvm/led.c
@@ -109,6 +109,9 @@ int iwl_mvm_leds_init(struct iwl_mvm *mv
 
 	mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
 				   wiphy_name(mvm->hw->wiphy));
+	if (!mvm->led.name)
+		return -ENOMEM;
+
 	mvm->led.brightness_set = iwl_led_brightness_set;
 	mvm->led.max_brightness = 1;