The patch titled
ansi_cprng: zero out key data on exit
has been added to the -mm tree. Its filename is
ansi_cprng-zero-out-key-data-on-exit.patch
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------------------------------------------------------
Subject: ansi_cprng: zero out key data on exit
From: Neil Horman <nhorman@xxxxxxxxxxxxx>
Its been mentioned to me a few times that the ansi_cprng doesn't zero out
its data when a context is freed. Given that we store key, and other seed
data in that structure, I think its probably a good idea that we zero it
out. This patch does that.
Signed-off-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
crypto/ansi_cprng.c | 1 +
1 file changed, 1 insertion(+)
diff -puN crypto/ansi_cprng.c~ansi_cprng-zero-out-key-data-on-exit crypto/ansi_cprng.c
--- a/crypto/ansi_cprng.c~ansi_cprng-zero-out-key-data-on-exit
+++ a/crypto/ansi_cprng.c
@@ -271,6 +271,7 @@ done:
static void free_prng_context(struct prng_context *ctx)
{
crypto_free_cipher(ctx->tfm);
+ memset(ctx, 0, sizeof(struct prng_context));
}
static int reset_prng_context(struct prng_context *ctx,
_
Patches currently in -mm which might be from nhorman@xxxxxxxxxxxxx are
linux-next.patch
ansi_cprng-zero-out-key-data-on-exit.patch
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