disk: Fix usdhc driver out-of-bounds array access
The usdhc driver was incorrectly post-decrementing a do/while loop
iterator, causing an extra iteration of the loop and an out-of-bounds
array access. Change the iterator to decrement within the loop instead.
Tested samples/subsys/fs/fat_fs on the mimxrt1050_evk board.
Coverity-CID: 203403
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
diff --git a/subsys/disk/disk_access_usdhc.c b/subsys/disk/disk_access_usdhc.c
index ca93a95..53a22ab 100644
--- a/subsys/disk/disk_access_usdhc.c
+++ b/subsys/disk/disk_access_usdhc.c
@@ -1101,7 +1101,8 @@
((cmd->response[i - 2U] &
0xFF000000U) >> 24U);
}
- } while (i--);
+ i--;
+ } while (i);
}
}
/* check response error flag */
