From: Xiaoke Wang xkernel.wang@foxmail.com
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 --- security/integrity/integrity_audit.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/security/integrity/integrity_audit.c +++ b/security/integrity/integrity_audit.c @@ -36,6 +36,8 @@ void integrity_audit_msg(int audit_msgno return;
ab = audit_log_start(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),