diff options
Diffstat (limited to 'security/integrity/ima/ima_queue.c')
| -rw-r--r-- | security/integrity/ima/ima_queue.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/security/integrity/ima/ima_queue.c b/security/integrity/ima/ima_queue.c index 552705d5a78d..32f6ac0f96df 100644 --- a/security/integrity/ima/ima_queue.c +++ b/security/integrity/ima/ima_queue.c @@ -44,7 +44,8 @@ struct ima_h_table ima_htable = { static DEFINE_MUTEX(ima_extend_list_mutex); /* lookup up the digest value in the hash table, and return the entry */ -static struct ima_queue_entry *ima_lookup_digest_entry(u8 *digest_value) +static struct ima_queue_entry *ima_lookup_digest_entry(u8 *digest_value, + int pcr) { struct ima_queue_entry *qe, *ret = NULL; unsigned int key; @@ -54,7 +55,7 @@ static struct ima_queue_entry *ima_lookup_digest_entry(u8 *digest_value) rcu_read_lock(); hlist_for_each_entry_rcu(qe, &ima_htable.queue[key], hnext) { rc = memcmp(qe->entry->digest, digest_value, TPM_DIGEST_SIZE); - if (rc == 0) { + if ((rc == 0) && (qe->entry->pcr == pcr)) { ret = qe; break; } @@ -89,14 +90,14 @@ static int ima_add_digest_entry(struct ima_template_entry *entry) return 0; } -static int ima_pcr_extend(const u8 *hash) +static int ima_pcr_extend(const u8 *hash, int pcr) { int result = 0; if (!ima_used_chip) return result; - result = tpm_pcr_extend(TPM_ANY_NUM, CONFIG_IMA_MEASURE_PCR_IDX, hash); + result = tpm_pcr_extend(TPM_ANY_NUM, pcr, hash); if (result != 0) pr_err("Error Communicating to TPM chip, result: %d\n", result); return result; @@ -118,7 +119,7 @@ int ima_add_template_entry(struct ima_template_entry *entry, int violation, mutex_lock(&ima_extend_list_mutex); if (!violation) { memcpy(digest, entry->digest, sizeof(digest)); - if (ima_lookup_digest_entry(digest)) { + if (ima_lookup_digest_entry(digest, entry->pcr)) { audit_cause = "hash_exists"; result = -EEXIST; goto out; @@ -135,7 +136,7 @@ int ima_add_template_entry(struct ima_template_entry *entry, int violation, if (violation) /* invalidate pcr */ memset(digest, 0xff, sizeof(digest)); - tpmresult = ima_pcr_extend(digest); + tpmresult = ima_pcr_extend(digest, entry->pcr); if (tpmresult != 0) { snprintf(tpm_audit_cause, AUDIT_CAUSE_LEN_MAX, "TPM_error(%d)", tpmresult); |