| Message ID | 1447346769-30422-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/crypto/ahash.c b/crypto/ahash.c index f2a5d8f656ff..d3e86a46ecea 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -537,7 +537,8 @@ static int ahash_prepare_alg(struct ahash_alg *alg) struct crypto_alg *base = &alg->halg.base; if (alg->halg.digestsize > PAGE_SIZE / 8 || - alg->halg.statesize > PAGE_SIZE / 8) + alg->halg.statesize > PAGE_SIZE / 8 || + alg->halg.statesize == 0) return -EINVAL; base->cra_type = &crypto_ahash_type;
This is a note to let you know that I have just added a patch titled crypto: ahash - ensure statesize is non-zero to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt20. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 59aff89435b9be17c5b53706c1550ea8aadbbb25 Mon Sep 17 00:00:00 2001 From: Russell King <rmk+kernel@arm.linux.org.uk> Date: Fri, 9 Oct 2015 20:43:33 +0100 Subject: crypto: ahash - ensure statesize is non-zero commit 8996eafdcbad149ac0f772fb1649fbb75c482a6a upstream. Unlike shash algorithms, ahash drivers must implement export and import as their descriptors may contain hardware state and cannot be exported as is. Unfortunately some ahash drivers did not provide them and end up causing crashes with algif_hash. This patch adds a check to prevent these drivers from registering ahash algorithms until they are fixed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- crypto/ahash.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)