From: trix@redhat.com
To: jejb@linux.ibm.com, jarkko@kernel.org, zohar@linux.ibm.com,
dhowells@redhat.com, jmorris@namei.org, serge@hallyn.com
Cc: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org, Tom Rix <trix@redhat.com>
Subject: [PATCH] KEYS: trusted: fix memory leak
Date: Fri, 30 Apr 2021 11:58:10 -0700 [thread overview]
Message-ID: <20210430185810.3331311-1-trix@redhat.com> (raw)
From: Tom Rix <trix@redhat.com>
Static analysis reports this problem
trusted-keys/trusted_tpm1.c:496:10: warning: Potential memory leak
return ret;
^~~
In tpm_seal() some failure handling returns directly, without
freeing memory.
Fixes: 5df16caada3f ("KEYS: trusted: Fix incorrect handling of tpm_get_random()")
Signed-off-by: Tom Rix <trix@redhat.com>
---
security/keys/trusted-keys/trusted_tpm1.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c
index 469394550801..aa108bea6739 100644
--- a/security/keys/trusted-keys/trusted_tpm1.c
+++ b/security/keys/trusted-keys/trusted_tpm1.c
@@ -493,10 +493,12 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype,
ret = tpm_get_random(chip, td->nonceodd, TPM_NONCE_SIZE);
if (ret < 0)
- return ret;
+ goto out;
- if (ret != TPM_NONCE_SIZE)
- return -EIO;
+ if (ret != TPM_NONCE_SIZE) {
+ ret = -EIO;
+ goto out;
+ }
ordinal = htonl(TPM_ORD_SEAL);
datsize = htonl(datalen);
--
2.26.3
next reply other threads:[~2021-04-30 18:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 18:58 trix [this message]
2021-04-30 19:50 ` [PATCH] KEYS: trusted: fix memory leak Ben Boeckel
2021-04-30 23:08 ` Tom Rix
2021-05-03 14:56 ` Jarkko Sakkinen
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