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| author | Eric Biggers <ebiggers@google.com> | 2019-03-31 13:04:12 -0700 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-09-23 21:11:39 +0100 |
| commit | 00c649ff2e87add15d293ca6c52180b215b8a4bd (patch) | |
| tree | 078fb6c401395e33643783c788bf40980e9c9f6b /arch | |
| parent | 4b0b903e98c56574420b6c460aefbbf66f3ce31c (diff) | |
crypto: crct10dif-generic - fix use via crypto_shash_digest()
commit 307508d1072979f4435416f87936f87eaeb82054 upstream.
The ->digest() method of crct10dif-generic reads the current CRC value
from the shash_desc context. But this value is uninitialized, causing
crypto_shash_digest() to compute the wrong result. Fix it.
Probably this wasn't noticed before because lib/crc-t10dif.c only uses
crypto_shash_update(), not crypto_shash_digest(). Likewise,
crypto_shash_digest() is not yet tested by the crypto self-tests because
those only test the ahash API which only uses shash init/update/final.
This bug was detected by my patches that improve testmgr to fuzz
algorithms against their generic implementation.
Fixes: 2d31e518a428 ("crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework")
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions