| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 001/116] integrity: check the return value of audit_log_start() | Date | Mon, 14 Feb 2022 10:25:00 +0100 |
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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 @@ -45,6 +45,8 @@ void integrity_audit_message(int audit_m 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_uid()),
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