This is a note to let you know that I've just added the patch titled
mmc: core: Avoid negative index with array access
to the 6.8-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:
mmc-core-avoid-negative-index-with-array-access.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From cf55a7acd1ed38afe43bba1c8a0935b51d1dc014 Mon Sep 17 00:00:00 2001
From: Mikko Rapeli <mikko.rapeli@xxxxxxxxxx>
Date: Wed, 13 Mar 2024 15:37:44 +0200
Subject: mmc: core: Avoid negative index with array access
From: Mikko Rapeli <mikko.rapeli@xxxxxxxxxx>
commit cf55a7acd1ed38afe43bba1c8a0935b51d1dc014 upstream.
Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") assigns
prev_idata = idatas[i - 1], but doesn't check that the iterator i is
greater than zero. Let's fix this by adding a check.
Fixes: 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu")
Link: https://lore.kernel.org/all/20231129092535.3278-1-avri.altman@xxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mikko Rapeli <mikko.rapeli@xxxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
Tested-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240313133744.2405325-2-mikko.rapeli@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -488,7 +488,7 @@ static int __mmc_blk_ioctl_cmd(struct mm
if (idata->flags & MMC_BLK_IOC_DROP)
return 0;
- if (idata->flags & MMC_BLK_IOC_SBC)
+ if (idata->flags & MMC_BLK_IOC_SBC && i > 0)
prev_idata = idatas[i - 1];
/*
Patches currently in stable-queue which might be from mikko.rapeli@xxxxxxxxxx are
queue-6.8/mmc-core-initialize-mmc_blk_ioc_data.patch
queue-6.8/mmc-core-avoid-negative-index-with-array-access.patch
