-stable review patch. If anyone has any objections, please let us know.
---------------------
From: Herbert Xu <[email protected]>
The function crypto_mod_put first frees the algorithm and then drops
the reference to its module. Unfortunately we read the module pointer
which after freeing the algorithm and that pointer sits inside the
object that we just freed.
So this patch reads the module pointer out before we free the object.
Thanks to Luca Tettamanti for reporting this.
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
crypto/api.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- linux-2.6.20.13.orig/crypto/api.c
+++ linux-2.6.20.13/crypto/api.c
@@ -48,8 +48,10 @@ EXPORT_SYMBOL_GPL(crypto_mod_get);
void crypto_mod_put(struct crypto_alg *alg)
{
+ struct module *module = alg->cra_module;
+
crypto_alg_put(alg);
- module_put(alg->cra_module);
+ module_put(module);
}
EXPORT_SYMBOL_GPL(crypto_mod_put);
--
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
