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module: Call security_kernel_post_load_data() 

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>
Link: https://lore.kernel.org/r/20201002173828.2099543-11-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook 2020-10-02 10:38:22 -07:00 committed by Greg Kroah-Hartman
parent 4f2d99b06b
commit 38f901735a
1 changed files with 10 additions and 4 deletions
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14
kernel/module.c
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@ -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)