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-rw-r--r--security/keys/trusted-keys/trusted_tpm1.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c
index 74d82093cbaa..204826b734ac 100644
--- a/security/keys/trusted-keys/trusted_tpm1.c
+++ b/security/keys/trusted-keys/trusted_tpm1.c
@@ -403,9 +403,12 @@ static int osap(struct tpm_buf *tb, struct osapsess *s,
int ret;
ret = tpm_get_random(chip, ononce, TPM_NONCE_SIZE);
- if (ret != TPM_NONCE_SIZE)
+ if (ret < 0)
return ret;
+ if (ret != TPM_NONCE_SIZE)
+ return -EIO;
+
tpm_buf_reset(tb, TPM_TAG_RQU_COMMAND, TPM_ORD_OSAP);
tpm_buf_append_u16(tb, type);
tpm_buf_append_u32(tb, handle);
@@ -496,8 +499,12 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype,
goto out;
ret = tpm_get_random(chip, td->nonceodd, TPM_NONCE_SIZE);
+ if (ret < 0)
+ return ret;
+
if (ret != TPM_NONCE_SIZE)
- goto out;
+ return -EIO;
+
ordinal = htonl(TPM_ORD_SEAL);
datsize = htonl(datalen);
pcrsize = htonl(pcrinfosize);
@@ -601,9 +608,12 @@ static int tpm_unseal(struct tpm_buf *tb,
ordinal = htonl(TPM_ORD_UNSEAL);
ret = tpm_get_random(chip, nonceodd, TPM_NONCE_SIZE);
+ if (ret < 0)
+ return ret;
+
if (ret != TPM_NONCE_SIZE) {
pr_info("trusted_key: tpm_get_random failed (%d)\n", ret);
- return ret;
+ return -EIO;
}
ret = TSS_authhmac(authdata1, keyauth, TPM_NONCE_SIZE,
enonce1, nonceodd, cont, sizeof(uint32_t),
@@ -1013,8 +1023,12 @@ static int trusted_instantiate(struct key *key,
case Opt_new:
key_len = payload->key_len;
ret = tpm_get_random(chip, payload->key, key_len);
+ if (ret < 0)
+ goto out;
+
if (ret != key_len) {
pr_info("trusted_key: key_create failed (%d)\n", ret);
+ ret = -EIO;
goto out;
}
if (tpm2)