lkml.org 
[lkml]   [2009]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] sdio: Read buffer overflow
If the loop breaks with an index of 0, then we read before the array.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 963f293..0f8853c 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -40,7 +40,7 @@ static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
nr_strings++;
}

- if (buf[i-1] != '\0') {
+ if (i != 0 && buf[i-1] != '\0') {
printk(KERN_WARNING "SDIO: ignoring broken CISTPL_VERS_1\n");
return 0;
}

\
 
 \ /
  Last update: 2009-08-07 17:15    [W:0.602 / U:0.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site