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ath10k: Fix a use after free in ath10k_htc_send_bundle

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[ 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: c8334512f3 ("ath10k: add htt TX bundle for sdio")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210329120154.8963-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lv Yunlong 2021-03-29 05:01:54 -07:00 committed by Greg Kroah-Hartman
parent 0f98e1ea97
commit 8bb054fb33
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath10k/htc.c
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@ -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;
}