From 40c1001792de63e0f90e977eb05393fd71f78692 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Mon, 20 Dec 2010 12:37:18 -0500 Subject: [PATCH] trusted-keys: free memory bugfix Add missing kfree(td) in tpm_seal() before the return, freeing td on error paths as well. Reported-by: Dan Carpenter Signed-off-by: Mimi Zohar Acked-by: David Safford Acked-by: David Howells Signed-off-by: Serge Hallyn Signed-off-by: James Morris --- security/keys/trusted_defined.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/security/keys/trusted_defined.c b/security/keys/trusted_defined.c index 975e9f29a52c..932f8687df16 100644 --- a/security/keys/trusted_defined.c +++ b/security/keys/trusted_defined.c @@ -511,7 +511,7 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype, /* get session for sealing key */ ret = osap(tb, &sess, keyauth, keytype, keyhandle); if (ret < 0) - return ret; + goto out; dump_sess(&sess); /* calculate encrypted authorization value */ @@ -519,11 +519,11 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype, memcpy(td->xorwork + SHA1_DIGEST_SIZE, sess.enonce, SHA1_DIGEST_SIZE); ret = TSS_sha1(td->xorwork, SHA1_DIGEST_SIZE * 2, td->xorhash); if (ret < 0) - return ret; + goto out; ret = tpm_get_random(tb, td->nonceodd, TPM_NONCE_SIZE); if (ret < 0) - return ret; + goto out; ordinal = htonl(TPM_ORD_SEAL); datsize = htonl(datalen); pcrsize = htonl(pcrinfosize); @@ -552,7 +552,7 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype, &datsize, datalen, data, 0, 0); } if (ret < 0) - return ret; + goto out; /* build and send the TPM request packet */ INIT_BUF(tb); @@ -572,7 +572,7 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype, ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE); if (ret < 0) - return ret; + goto out; /* calculate the size of the returned Blob */ sealinfosize = LOAD32(tb->data, TPM_DATA_OFFSET + sizeof(uint32_t)); @@ -591,6 +591,8 @@ static int tpm_seal(struct tpm_buf *tb, uint16_t keytype, memcpy(blob, tb->data + TPM_DATA_OFFSET, storedsize); *bloblen = storedsize; } +out: + kfree(td); return ret; } -- 2.20.1