diff options
| author | Colin Ian King <colin.king@canonical.com> | 2021-04-30 12:37:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-19 10:56:08 +0200 |
| commit | 3e24fbd37e72e8a67b74991970fecc82d14f57af (patch) | |
| tree | 14c33f295ecdbebd08e2b757f804b3f712fb94d8 /security | |
| parent | 4bcf3b752d59b1ef839afcc4b1c0731652ef40d6 (diff) | |
KEYS: trusted: Fix memory leak on object td
commit 83a775d5f9bfda95b1c295f95a3a041a40c7f321 upstream.
Two error return paths are neglecting to free allocated object td,
causing a memory leak. Fix this by returning via the error return
path that securely kfree's td.
Fixes clang scan-build warning:
security/keys/trusted-keys/trusted_tpm1.c:496:10: warning: Potential
memory leak [unix.Malloc]
Cc: stable@vger.kernel.org
Fixes: 5df16caada3f ("KEYS: trusted: Fix incorrect handling of tpm_get_random()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/keys/trusted-keys/trusted_tpm1.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c index 1e13c9f7ea8c..56c9b48460d9 100644 --- a/security/keys/trusted-keys/trusted_tpm1.c +++ b/security/keys/trusted-keys/trusted_tpm1.c @@ -500,10 +500,12 @@ 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); |