diff options
| author | Harald Freudenberger <freude@linux.vnet.ibm.com> | 2014-05-07 16:51:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 13:25:40 -0700 |
| commit | c99612d30ffcdf6ff41281a84e8df2a56c8b7d20 (patch) | |
| tree | bec8fec48f20ba84561a6d545d89b1ef59cdc251 | |
| parent | d1ae1920b53e00849397c3f6f63dace219de46a0 (diff) | |
crypto: s390 - fix aes,des ctr mode concurrency finding.
commit 3901c1124ec5099254a9396085f7798153a7293f upstream.
An additional testcase found an issue with the last
series of patches applied: the fallback solution may
not save the iv value after operation. This very small
fix just makes sure the iv is copied back to the
walk/desc struct.
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/s390/crypto/aes_s390.c | 3 | ||||
| -rw-r--r-- | arch/s390/crypto/des_s390.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index 2a245b55bb71..fd104db9cea1 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -818,6 +818,9 @@ static int ctr_aes_crypt(struct blkcipher_desc *desc, long func, else memcpy(walk->iv, ctrptr, AES_BLOCK_SIZE); spin_unlock(&ctrblk_lock); + } else { + if (!nbytes) + memcpy(walk->iv, ctrptr, AES_BLOCK_SIZE); } /* * final block may be < AES_BLOCK_SIZE, copy only nbytes diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c index 2d96e68febb2..f2d6cccddcf8 100644 --- a/arch/s390/crypto/des_s390.c +++ b/arch/s390/crypto/des_s390.c @@ -429,6 +429,9 @@ static int ctr_desall_crypt(struct blkcipher_desc *desc, long func, else memcpy(walk->iv, ctrptr, DES_BLOCK_SIZE); spin_unlock(&ctrblk_lock); + } else { + if (!nbytes) + memcpy(walk->iv, ctrptr, DES_BLOCK_SIZE); } /* final block may be < DES_BLOCK_SIZE, copy only nbytes */ if (nbytes) { |