* [PATCH v1] wifi: mt76: mt792x: fix UAF in SDIO TX path when out of memory
@ 2026-08-17 9:00 Eason Lai
0 siblings, 0 replies; only message in thread
From: Eason Lai @ 2026-08-17 9:00 UTC (permalink / raw)
To: nbd, lorenzo
Cc: linux-wireless, linux-mediatek, kun.wu, deren.wu, sean.wang,
quan.zhou, ryder.lee, leon.yen, litien.chang, jb.tsai, eason.lai,
Devin Wittmayer
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
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