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Since v4.9, the crypto API cannot (normally) be used to encrypt/decrypt stack buffers because the stack may be virtually mapped. Fix this for the padding buffers in encrypted-keys by using ZERO_PAGE for the encryption padding and by allocating a temporary heap buffer for the decryption padding. Tested with CONFIG_DEBUG_SG=y: keyctl new_session keyctl add user master "abcdefghijklmnop" @s keyid=$(keyctl add encrypted desc "new user:master 25" @s) datablob="$(keyctl pipe $keyid)" keyctl unlink $keyid keyid=$(keyctl add encrypted desc "load $datablob" @s) datablob2="$(keyctl pipe $keyid)" [ "$datablob" = "$datablob2" ] && echo "Success!" Cc: Andy Lutomirski <luto@kernel.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: stable@vger.kernel.org # 4.9+ Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <james.l.morris@oracle.com> |
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| .. | ||
| encrypted-keys | ||
| big_key.c | ||
| compat_dh.c | ||
| compat.c | ||
| dh.c | ||
| gc.c | ||
| internal.h | ||
| Kconfig | ||
| key.c | ||
| keyctl.c | ||
| keyring.c | ||
| Makefile | ||
| permission.c | ||
| persistent.c | ||
| proc.c | ||
| process_keys.c | ||
| request_key_auth.c | ||
| request_key.c | ||
| sysctl.c | ||
| trusted.c | ||
| trusted.h | ||
| user_defined.c | ||