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authorGilad Ben-Yossef <gilad@benyossef.com>2017-05-18 16:29:23 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-05-23 12:45:10 +0800
commite68368aed56324e2e38d4f6b044bb8cf82077fc2 (patch)
treeeaa1349ae5721cf907d810d54d9e66198ac2d7bd /crypto/asymmetric_keys/public_key.c
parent9933e113c2e87a9f46a40fde8dafbf801dca1ab9 (diff)
downloadlinux-stericsson-e68368aed56324e2e38d4f6b044bb8cf82077fc2.tar.gz
crypto: asymmetric_keys - handle EBUSY due to backlog correctly
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 Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/asymmetric_keys/public_key.c')
-rw-r--r--crypto/asymmetric_keys/public_key.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c
index d3a989e718f5..3cd6e12cfc46 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;
}