Patch "crypto: ecc - Fix NULL pointer deref. on no default_rng" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

crypto: ecc - Fix NULL pointer deref. on no default_rng

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-ecc-fix-null-pointer-deref.-on-no-default_rng.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Pierre <[email protected]>
Date: Sun, 12 Nov 2017 15:24:32 +0100
Subject: crypto: ecc - Fix NULL pointer deref. on no default_rng

From: Pierre <[email protected]>

[ Upstream commit 4c0e22c90510308433272d7ba281b1eb4eda8209 ]

If crypto_get_default_rng returns an error, the function ecc_gen_privkey should return an error. Instead, it currently tries to use the default_rng nevertheless, thus creating a kernel panic with a NULL pointer dereference.
Returning the error directly, as was supposedly intended when looking at the code, fixes this.

---
 crypto/ecc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -964,7 +964,7 @@ int ecc_gen_privkey(unsigned int curve_i
 	 * DRBG with a security strength of 256.
 	 */
 	if (crypto_get_default_rng())
-		err = -EFAULT;
+		return -EFAULT;
 
 	err = crypto_rng_get_bytes(crypto_default_rng, (u8 *)priv, nbytes);
 	crypto_put_default_rng();

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/crypto-ecc-fix-null-pointer-deref.-on-no-default_rng.patch