From: Kees Cook <keescook@chromium.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kees Cook <keescook@chromium.org>, KP Singh <kpsingh@google.com>,
Jessica Yu <jeyu@kernel.org>,
Scott Branden <scott.branden@broadcom.com>,
Mimi Zohar <zohar@linux.ibm.com>,
Luis Chamberlain <mcgrof@kernel.org>,
Takashi Iwai <tiwai@suse.de>, SeongJae Park <sjpark@amazon.de>,
KP Singh <kpsingh@chromium.org>,
linux-efi@vger.kernel.org, linux-security-module@vger.kernel.org,
linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v5 10/16] module: Call security_kernel_post_load_data()
Date: Fri, 2 Oct 2020 10:38:22 -0700 [thread overview]
Message-ID: <20201002173828.2099543-11-keescook@chromium.org> (raw)
In-Reply-To: <20201002173828.2099543-1-keescook@chromium.org>
Now that there is an API for checking loaded contents for modules
loaded without a file, call into the LSM hooks.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: KP Singh <kpsingh@google.com>
Acked-by: Jessica Yu <jeyu@kernel.org>
---
kernel/module.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index f47209e0fde6..adfa21dd3842 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3014,7 +3014,7 @@ static int copy_module_from_user(const void __user *umod, unsigned long len,
if (info->len < sizeof(*(info->hdr)))
return -ENOEXEC;
- err = security_kernel_load_data(LOADING_MODULE, false);
+ err = security_kernel_load_data(LOADING_MODULE, true);
if (err)
return err;
@@ -3024,11 +3024,17 @@ static int copy_module_from_user(const void __user *umod, unsigned long len,
return -ENOMEM;
if (copy_chunked_from_user(info->hdr, umod, info->len) != 0) {
- vfree(info->hdr);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
- return 0;
+ err = security_kernel_post_load_data((char *)info->hdr, info->len,
+ LOADING_MODULE, "init_module");
+out:
+ if (err)
+ vfree(info->hdr);
+
+ return err;
}
static void free_copy(struct load_info *info)
--
2.25.1
next prev parent reply other threads:[~2020-10-02 17:39 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-02 17:38 [PATCH v5 00/16] Introduce partial kernel_read_file() support Kees Cook
2020-10-02 17:38 ` [PATCH v5 01/16] fs/kernel_read_file: Remove FIRMWARE_PREALLOC_BUFFER enum Kees Cook
2020-10-06 17:17 ` James Morris
2020-10-02 17:38 ` [PATCH v5 02/16] fs/kernel_read_file: Remove FIRMWARE_EFI_EMBEDDED enum Kees Cook
2020-10-02 17:38 ` [PATCH v5 03/16] fs/kernel_read_file: Split into separate include file Kees Cook
2020-10-02 17:38 ` [PATCH v5 04/16] fs/kernel_read_file: Split into separate source file Kees Cook
2020-10-06 17:18 ` James Morris
2020-10-02 17:38 ` [PATCH v5 05/16] fs/kernel_read_file: Remove redundant size argument Kees Cook
2020-10-02 17:38 ` [PATCH v5 06/16] fs/kernel_read_file: Switch buffer size arg to size_t Kees Cook
2020-10-02 17:38 ` [PATCH v5 07/16] fs/kernel_read_file: Add file_size output argument Kees Cook
2020-10-02 17:38 ` [PATCH v5 08/16] LSM: Introduce kernel_post_load_data() hook Kees Cook
2020-10-02 17:38 ` [PATCH v5 09/16] firmware_loader: Use security_post_load_data() Kees Cook
2020-10-02 17:38 ` Kees Cook [this message]
2020-10-06 17:19 ` [PATCH v5 10/16] module: Call security_kernel_post_load_data() James Morris
2020-10-02 17:38 ` [PATCH v5 11/16] LSM: Add "contents" flag to kernel_read_file hook Kees Cook
2020-10-06 17:19 ` James Morris
2020-10-02 17:38 ` [PATCH v5 12/16] IMA: Add support for file reads without contents Kees Cook
2020-10-02 17:38 ` [PATCH v5 13/16] fs/kernel_file_read: Add "offset" arg for partial reads Kees Cook
2020-10-02 17:38 ` [PATCH v5 14/16] firmware: Store opt_flags in fw_priv Kees Cook
2020-10-02 17:38 ` [PATCH v5 15/16] firmware: Add request_partial_firmware_into_buf() Kees Cook
2020-10-02 17:38 ` [PATCH v5 16/16] test_firmware: Test partial read support Kees Cook
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