diff options
| author | Mikko Rapeli | 2024-03-13 15:37:44 +0200 |
|---|---|---|
| committer | Ulf Hansson | 2024-03-25 12:25:04 +0100 |
| commit | cf55a7acd1ed38afe43bba1c8a0935b51d1dc014 (patch) | |
| tree | 4a1a5656a3c1b7a23c8a06d93cec37c05070074f | |
| parent | 0cdfe5b0bf295c0dee97436a8ed13336933a0211 (diff) | |
mmc: core: Avoid negative index with array access
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@wdc.com/
Cc: stable@vger.kernel.org
Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240313133744.2405325-2-mikko.rapeli@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/block.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 600adc3f2af4..90c51b12148e 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -488,7 +488,7 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, 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]; /* |