3.6-stable review patch. If anyone has any objections, please let me know.
------------------ From: Richard Genoud <[email protected]> commit bb0a13a13411c4ce24c48c8ff3cdf7b48d237240 upstream. If override size is too big, the module was actually loaded instead of failing, because retval was not set. This lead to memory corruption with the use of the freed structs nandsim and nand_chip. Signed-off-by: Richard Genoud <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/mtd/nand/nandsim.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -2333,6 +2333,7 @@ static int __init ns_init_module(void) uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize; if (new_size >> overridesize != nsmtd->erasesize) { NS_ERR("overridesize is too big\n"); + retval = -EINVAL; goto err_exit; } /* N.B. This relies on nand_scan not doing anything with the size before we change it */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
