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| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2022-01-15 09:11:11 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 12:43:52 +0100 |
| commit | 9d75b8889739721b59c5731a68c06e7683e8360b (patch) | |
| tree | bd517b252c90cde7296646fe961d6eabe37bf061 /security | |
| parent | ad3dfaf3e83818c54d1d2637ab818a4b00f8baf7 (diff) | |
| download | linux-9d75b8889739721b59c5731a68c06e7683e8360b.tar.gz linux-9d75b8889739721b59c5731a68c06e7683e8360b.tar.bz2 linux-9d75b8889739721b59c5731a68c06e7683e8360b.zip | |
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>
Diffstat (limited to 'security')
| -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), |