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patch "staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS" added to staging-linus

PATCH [email protected] 1 participant 1 message Oct 14, 2019

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This is a note to let you know that I've just added the patch titled

    staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 153c5d8191c26165dbbd2646448ca7207f7796d0 Mon Sep 17 00:00:00 2001
From: Colin Ian King <[email protected]>
Date: Mon, 14 Oct 2019 12:02:01 +0100
Subject: staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS

Currently the exit return path when sme->key_idx >= NUM_WEPKEYS is via label 'exit' and this checks if result is non-zero, however result has not been initialized and contains garbage. Fix this by replacing the goto with a return with the error code.

Addresses-Coverity: ("Uninitialized scalar variable")

Fixes 0ca6d8e74489 ("Staging: wlan-ng: replace switch-case statements with macro")
Cc stable <[email protected]>
---
 drivers/staging/wlan-ng/cfg80211.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
drivers/staging/wlan-ng/cfg80211.c +2 -4
index eee1998c4b18..fac38c842ac5 100644
@@ -469,10 +469,8 @@ static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 	/* Set the encryption - we only support wep */
 	if (is_wep) {
 		if (sme->key) {
-			if (sme->key_idx >= NUM_WEPKEYS) {
-				err = -EINVAL;
-				goto exit;
-			}
+			if (sme->key_idx >= NUM_WEPKEYS)
+				return -EINVAL;
 
 			result = prism2_domibset_uint32(wlandev,
 				DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
Signature · 1 line
2.23.0