From: Eason Lai <eason.lai@mediatek.com>
To: <nbd@nbd.name>, <lorenzo@kernel.org>
Cc: <linux-wireless@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>, <kun.wu@mediatek.com>,
<deren.wu@mediatek.com>, <sean.wang@mediatek.com>,
<quan.zhou@mediatek.com>, <ryder.lee@mediatek.com>,
<leon.yen@mediatek.com>, <litien.chang@mediatek.com>,
<jb.tsai@mediatek.com>, <eason.lai@mediatek.com>,
Devin Wittmayer <lucid_duck@justthetip.ca>
Subject: [PATCH v1] wifi: mt76: mt792x: fix UAF in SDIO TX path when out of memory
Date: Mon, 17 Aug 2026 17:00:29 +0800 [thread overview]
Message-ID: <20260817090029.167552-1-eason.lai@mediatek.com> (raw)
Using __skb_pad() instead of skb_pad() in mt76_skb_adjust_pad()
to prevent double-free, as the caller handles cleanup.
Fixes: 808f2767d421 ("wifi: mt76: mt792x: Fix memory leak in SDIO TX path")
Co-developed-by: Devin Wittmayer <lucid_duck@justthetip.ca>
Signed-off-by: Eason Lai <eason.lai@mediatek.com>
---
drivers/net/wireless/mediatek/mt76/tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 3707ee19e4ae..ec503521ae63 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -879,7 +879,7 @@ int mt76_skb_adjust_pad(struct sk_buff *skb, int pad)
}
}
- if (skb_pad(last, pad))
+ if (__skb_pad(last, pad, false))
return -ENOMEM;
__skb_put(last, pad);
--
2.45.2
reply other threads:[~2026-08-17 9:00 UTC|newest]
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