5.10-stable patches

added patches:
	moxart-fix-potential-use-after-free-on-remove-path.patch

diff --git a/queue-5.10/moxart-fix-potential-use-after-free-on-remove-path.patch b/queue-5.10/moxart-fix-potential-use-after-free-on-remove-path.patch
new file mode 100644 (file)
index 0000000..4c5fcb3
--- /dev/null
+++ b/queue-5.10/moxart-fix-potential-use-after-free-on-remove-path.patch
@@ -0,0 +1,46 @@
+From bd2db32e7c3e35bd4d9b8bbff689434a50893546 Mon Sep 17 00:00:00 2001
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Date: Thu, 27 Jan 2022 08:16:38 +0100
+Subject: moxart: fix potential use-after-free on remove path
+
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+commit bd2db32e7c3e35bd4d9b8bbff689434a50893546 upstream.
+
+It was reported that the mmc host structure could be accessed after it
+was freed in moxart_remove(), so fix this by saving the base register of
+the device and using it instead of the pointer dereference.
+
+Cc: Ulf Hansson <ulf.hansson@linaro.org>
+Cc: Xiyu Yang <xiyuyang19@fudan.edu.cn>
+Cc: Xin Xiong <xiongx18@fudan.edu.cn>
+Cc: Xin Tan <tanxin.ctf@gmail.com>
+Cc: Tony Lindgren <tony@atomide.com>
+Cc: Yang Li <yang.lee@linux.alibaba.com>
+Cc: linux-mmc@vger.kernel.org
+Cc: stable <stable@vger.kernel.org>
+Reported-by: whitehat002 <hackyzh002@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Link: https://lore.kernel.org/r/20220127071638.4057899-1-gregkh@linuxfoundation.org
+Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/mmc/host/moxart-mmc.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mmc/host/moxart-mmc.c
++++ b/drivers/mmc/host/moxart-mmc.c
+@@ -708,12 +708,12 @@ static int moxart_remove(struct platform
+       if (!IS_ERR_OR_NULL(host->dma_chan_rx))
+               dma_release_channel(host->dma_chan_rx);
+       mmc_remove_host(mmc);
+-      mmc_free_host(mmc);
+ 
+       writel(0, host->base + REG_INTERRUPT_MASK);
+       writel(0, host->base + REG_POWER_CONTROL);
+       writel(readl(host->base + REG_CLOCK_CONTROL) | CLK_OFF,
+              host->base + REG_CLOCK_CONTROL);
++      mmc_free_host(mmc);
+ 
+       return 0;
+ }

diff --git a/queue-5.10/series b/queue-5.10/series
new file mode 100644 (file)
index 0000000..ff12c79
--- /dev/null
+++ b/queue-5.10/series
@@ -0,0 +1 @@
+moxart-fix-potential-use-after-free-on-remove-path.patch