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| author | Kees Cook <keescook@chromium.org> | 2020-10-02 19:38:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-05 13:37:03 +0200 |
| commit | 38f901735a9e2b3d182fc04a1dfcdb0d3325ea5d (patch) | |
| tree | b954c4124cb99c7ff1309dfd5f5d2db411373209 /kernel/module.c | |
| parent | firmware_loader: Use security_post_load_data() (diff) | |
| download | linux-38f901735a9e2b3d182fc04a1dfcdb0d3325ea5d.tar.xz linux-38f901735a9e2b3d182fc04a1dfcdb0d3325ea5d.zip | |
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>
Diffstat (limited to 'kernel/module.c')
| -rw-r--r-- | kernel/module.c | 14 |
1 files 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) |