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| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2022-01-15 04:11:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 14:44:48 +0300 |
| commit | 340f61fc19a8e406e2a5d2f07547326bb669a2c8 (patch) | |
| tree | c324c0f6e4dc744b9b9cc69c1ef3381db04fbc30 | |
| parent | 8034e99d1a010a795b979582c0b2370584d8abf4 (diff) | |
| download | linux-340f61fc19a8e406e2a5d2f07547326bb669a2c8.tar.xz | |
integrity: check the return value of audit_log_start()
commit 83230351c523b04ff8a029a4bdf97d881ecb96fc upstream.
audit_log_start() returns audit_buffer pointer on success or NULL on
error, so it is better to check the return value of it.
Fixes: 3323eec921ef ("integrity: IMA as an integrity service provider")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | security/integrity/integrity_audit.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/integrity/integrity_audit.c b/security/integrity/integrity_audit.c index 90987d15b6fe..6c415667ba67 100644 --- a/security/integrity/integrity_audit.c +++ b/security/integrity/integrity_audit.c @@ -39,6 +39,8 @@ void integrity_audit_msg(int audit_msgno, struct inode *inode, return; ab = audit_log_start(current->audit_context, GFP_KERNEL, audit_msgno); + if (!ab) + return; audit_log_format(ab, "pid=%d uid=%u auid=%u ses=%u", task_pid_nr(current), from_kuid(&init_user_ns, current_cred()->uid), |