Blame patches.suse/Bluetooth-btsdio-fix-use-after-free-bug-in-btsdio_re.patch
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Takashi Iwai |
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From 1e9ac114c4428fdb7ff4635b45d4f46017e8916f Mon Sep 17 00:00:00 2001
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Takashi Iwai |
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From: Zheng Wang <zyytlz.wz@163.com>
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Takashi Iwai |
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Date: Thu, 9 Mar 2023 16:07:39 +0800
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Takashi Iwai |
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Subject: [PATCH] Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work
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Takashi Iwai |
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Git-commit: 1e9ac114c4428fdb7ff4635b45d4f46017e8916f
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Takashi Iwai |
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Patch-mainline: v6.3-rc4
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References: CVE-2023-1989 bsc#1210336
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In btsdio_probe, &data->work was bound with btsdio_work.In
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Takashi Iwai |
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btsdio_send_frame, it was started by schedule_work.
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If we call btsdio_remove with an unfinished job, there may
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be a race condition and cause UAF bug on hdev.
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Fixes: ddbaf13e3609 ("[Bluetooth] Add generic driver for Bluetooth SDIO devices")
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Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
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Takashi Iwai |
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Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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Takashi Iwai |
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Acked-by: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai |
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---
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drivers/bluetooth/btsdio.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
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index 795be33f2892..02893600db39 100644
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--- a/drivers/bluetooth/btsdio.c
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+++ b/drivers/bluetooth/btsdio.c
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@@ -354,6 +354,7 @@ static void btsdio_remove(struct sdio_func *func)
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BT_DBG("func %p", func);
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+ cancel_work_sync(&data->work);
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if (!data)
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return;
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--
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2.35.3
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