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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2012-09-11 12:05:45 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-09-11 12:05:45 +0800 |
| commit | 9b2f4cb65f7083cde86553cd56d6c2878e04932a (patch) | |
| tree | eb9a4d9fa6a66bf95cd60ff76e2ebc46ccb59115 /crypto/cipher.c | |
| parent | crypto/caam: Export gen_split_key symbol for other modules (diff) | |
| download | linux-dev-9b2f4cb65f7083cde86553cd56d6c2878e04932a.tar.xz linux-dev-9b2f4cb65f7083cde86553cd56d6c2878e04932a.zip | |
crypto: authenc - Fix crash with zero-length assoc data
The authenc code doesn't deal with zero-length associated data
correctly and ends up constructing a zero-length sg entry which
causes a crash when it's fed into the crypto system.
This patch fixes this by avoiding the code-path that triggers
the SG construction if we have no associated data.
This isn't the most optimal fix as it means that we'll end up
using the fallback code-path even when we could still execute
the digest function. However, this isn't a big deal as nobody
but the test path would supply zero-length associated data.
Reported-by: Romain Francoise <romain@orebokech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Romain Francoise <romain@orebokech.com>
Diffstat (limited to 'crypto/cipher.c')
0 files changed, 0 insertions, 0 deletions