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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-11-17 22:07:58 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-11-18 22:34:10 +0800 |
| commit | 19db05fdfca2b8b655b9d6d7a93387c1dc0d1fd5 (patch) | |
| tree | 991f951929b7cc9b297fd4062fc9dfd73d0ef411 /crypto/twofish_common.c | |
| parent | 736d25df198dddeec82f61fee130f7d0e4212a9c (diff) | |
| download | linux-crypto-19db05fdfca2b8b655b9d6d7a93387c1dc0d1fd5.tar.gz linux-crypto-19db05fdfca2b8b655b9d6d7a93387c1dc0d1fd5.zip | |
crypto: algif_hash - Fix NULL hash crash with shash
Recently algif_hash has been changed to allow null hashes. This
triggers a bug when used with an shash algorithm whereby it will
cause a crash during the digest operation.
This patch fixes it by avoiding the digest operation and instead
doing an init followed by a final which avoids the buggy code in
shash.
This patch also ensures that the result buffer is freed after an
error so that it is not returned as a genuine hash result on the
next recv call.
The shash/ahash wrapper code will be fixed later to handle this
case correctly.
Fixes: 1acbf36cd358 ("crypto: algif_hash - Handle NULL hashes correctly")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Laura Abbott <labbott@redhat.com>
Diffstat (limited to 'crypto/twofish_common.c')
0 files changed, 0 insertions, 0 deletions