[PATCH v3 13/19] module: Call security_kernel_post_load_data()
From: Kees Cook <hidden>
Date: 2020-07-24 21:37:09
Also in:
linux-efi, linux-integrity, linux-kselftest, lkml, selinux
Subsystem:
the rest · Maintainer:
Linus Torvalds
Now that there is an API for checking loaded contents for modules loaded without a file, call into the LSM hooks. Cc: Jessica Yu <jeyu@kernel.org> Signed-off-by: Kees Cook <redacted> --- kernel/module.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index d56cb34d9a2f..90a4788dff9d 100644
--- a/kernel/module.c
+++ b/kernel/module.c@@ -2967,7 +2967,7 @@ 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;
@@ -2977,11 +2977,17 @@ 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); +out: + if (err) + vfree(info->hdr); + + return err; } static void free_copy(struct load_info *info)
--
2.25.1