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| author | Abdun Nihaal <nihaal@cse.iitm.ac.in> | 2026-07-23 17:15:37 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-07 17:18:24 +0200 |
| commit | 3a5b23e7dbeb00c93ec3b8add97f5de9bb9cbb5c (patch) | |
| tree | ebc41a11fcc8e402d3e173c556e78567ac5e70b9 | |
| parent | 6e327f14e1c43e175bf530f9165b2cadff308553 (diff) | |
| download | linux-stable-3a5b23e7dbeb00c93ec3b8add97f5de9bb9cbb5c.tar.gz linux-stable-3a5b23e7dbeb00c93ec3b8add97f5de9bb9cbb5c.zip | |
wifi: rtlwifi: rtl8192du: Fix possible memory leak in rtl92du_init_sw_vars()
commit 6496ce90845df2d22fb8e8ed235cd2936fad41c8 upstream.
The memory allocated inside rtl92du_init_shared_data() is not freed in
any of the subsequent error paths in rtl92du_init_sw_vars().
Fix that by adding a call to rtl92du_deinit_shared_data() in the error
path.
Fixes: b5dc8873b6ff ("wifi: rtlwifi: Add rtl8192du/sw.c")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260723114539.136986-1-nihaal@cse.iitm.ac.in
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c index cc699efa9c79..a7824ba346e6 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c @@ -147,8 +147,10 @@ static int rtl92du_init_sw_vars(struct ieee80211_hw *hw) /* for firmware buf */ rtlpriv->rtlhal.pfirmware = kmalloc(0x8000, GFP_KERNEL); - if (!rtlpriv->rtlhal.pfirmware) - return -ENOMEM; + if (!rtlpriv->rtlhal.pfirmware) { + err = -ENOMEM; + goto error; + } rtlpriv->max_fw_size = 0x8000; pr_info("Driver for Realtek RTL8192DU WLAN interface\n"); @@ -162,10 +164,14 @@ static int rtl92du_init_sw_vars(struct ieee80211_hw *hw) pr_err("Failed to request firmware!\n"); kfree(rtlpriv->rtlhal.pfirmware); rtlpriv->rtlhal.pfirmware = NULL; - return err; + goto error; } return 0; + +error: + rtl92du_deinit_shared_data(hw); + return err; } static void rtl92du_deinit_sw_vars(struct ieee80211_hw *hw) |