This is a note to let you know that I've just added the patch titled
ath10k: Fix a use after free in ath10k_htc_send_bundle
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath10k-fix-a-use-after-free-in-ath10k_htc_send_bundl.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 56157fdf80fc9da46ac17685ddee16c41fd959eb
Author: Lv Yunlong <lyl2019@xxxxxxxxxxxxxxxx>
Date: Mon Mar 29 05:01:54 2021 -0700
ath10k: Fix a use after free in ath10k_htc_send_bundle
[ Upstream commit 8392df5d7e0b6a7d21440da1fc259f9938f4dec3 ]
In ath10k_htc_send_bundle, the bundle_skb could be freed by
dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later
by bundle_skb->len.
As skb_len = bundle_skb->len, my patch replaces bundle_skb->len to
skb_len after the bundle_skb was freed.
Fixes: c8334512f3dd1 ("ath10k: add htt TX bundle for sdio")
Signed-off-by: Lv Yunlong <lyl2019@xxxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210329120154.8963-1-lyl2019@xxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 31df6dd04bf6..540dd59112a5 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -665,7 +665,7 @@ static int ath10k_htc_send_bundle(struct ath10k_htc_ep *ep,
ath10k_dbg(ar, ATH10K_DBG_HTC,
"bundle tx status %d eid %d req count %d count %d len %d\n",
- ret, ep->eid, skb_queue_len(&ep->tx_req_head), cn, bundle_skb->len);
+ ret, ep->eid, skb_queue_len(&ep->tx_req_head), cn, skb_len);
return ret;
}
