diff options
| author | Lakshmi Ramasubramanian <nramas@linux.microsoft.com> | 2020-06-18 14:10:12 -0700 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.ibm.com> | 2020-07-16 21:48:36 -0400 |
| commit | 34e980bb83a07b533d175221436d698c1312c4a3 (patch) | |
| tree | 9acc42a8fcaae2c47ca2b5c92e5832e5e23bf7d0 /security/integrity/ima/ima_queue_keys.c | |
| parent | 2f845882ecd2f6808f87f387dfa9b03d71a68e01 (diff) | |
IMA: Add audit log for failure conditions
process_buffer_measurement() and ima_alloc_key_entry() functions need to
log an audit message for auditing integrity measurement failures.
Add audit message in these two functions. Remove "pr_devel" log message
in process_buffer_measurement().
Sample audit messages:
[ 6.303048] audit: type=1804 audit(1592506281.627:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel op=measuring_key cause=ENOMEM comm="swapper/0" name=".builtin_trusted_keys" res=0 errno=-12
[ 8.019432] audit: type=1804 audit(1592506283.344:10): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 op=measuring_kexec_cmdline cause=hashing_error comm="systemd" name="kexec-cmdline" res=0 errno=-22
Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'security/integrity/ima/ima_queue_keys.c')
| -rw-r--r-- | security/integrity/ima/ima_queue_keys.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_queue_keys.c b/security/integrity/ima/ima_queue_keys.c index cb3e3f501593..56ce24a18b66 100644 --- a/security/integrity/ima/ima_queue_keys.c +++ b/security/integrity/ima/ima_queue_keys.c @@ -68,6 +68,7 @@ static struct ima_key_entry *ima_alloc_key_entry(struct key *keyring, size_t payload_len) { int rc = 0; + const char *audit_cause = "ENOMEM"; struct ima_key_entry *entry; entry = kzalloc(sizeof(*entry), GFP_KERNEL); @@ -88,6 +89,10 @@ static struct ima_key_entry *ima_alloc_key_entry(struct key *keyring, out: if (rc) { + integrity_audit_message(AUDIT_INTEGRITY_PCR, NULL, + keyring->description, + func_measure_str(KEY_CHECK), + audit_cause, rc, 0, rc); ima_free_key_entry(entry); entry = NULL; } |