| Message ID | 1494503626-15877-2-git-send-email-gilad@benyossef.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/4] crypto: handle EBUSY due to backlog correctly | expand |
diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c index d3a989e..3cd6e12 100644 --- a/crypto/asymmetric_keys/public_key.c +++ b/crypto/asymmetric_keys/public_key.c @@ -141,7 +141,7 @@ int public_key_verify_signature(const struct public_key *pkey, * signature and returns that to us. */ ret = crypto_akcipher_verify(req); - if (ret == -EINPROGRESS) { + if ((ret == -EINPROGRESS) || (ret == -EBUSY)) { wait_for_completion(&compl.completion); ret = compl.err; }
public_key_verify_signature() was passing the CRYPTO_TFM_REQ_MAY_BACKLOG flag to akcipher_request_set_callback() but was not handling correctly the case where a -EBUSY error could be returned from the call to crypto_akcipher_verify() if backlog was used, possibly casuing data corruption due to use-after-free of buffers. Resolve this by handling -EBUSY correctly. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> CC: stable@vger.kernel.org --- crypto/asymmetric_keys/public_key.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.1.4