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authorEric Paris <eparis@redhat.com>2009-08-13 09:44:57 -0400
committerJames Morris <jmorris@namei.org>2009-08-14 11:18:37 +1000
commit9188499cdb117d86a1ea6b04374095b098d56936 (patch)
tree7c0dd23f2c98630c426cbd0bfbf5e46cc689091e /security/security.c
parenta8f80e8ff94ecba629542d9b4b5f5a8ee3eb565c (diff)
downloadlinux-2.6.34-ux500-9188499cdb117d86a1ea6b04374095b098d56936.tar.gz
security: introducing security_request_module
Calling request_module() will trigger a userspace upcall which will load a new module into the kernel. This can be a dangerous event if the process able to trigger request_module() is able to control either the modprobe binary or the module binary. This patch adds a new security hook to request_module() which can be used by an LSM to control a processes ability to call request_module(). Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/security.c')
-rw-r--r--security/security.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c
index 4501c5e1f98..0e993f42ce3 100644
--- a/security/security.c
+++ b/security/security.c
@@ -709,6 +709,11 @@ int security_kernel_create_files_as(struct cred *new, struct inode *inode)
return security_ops->kernel_create_files_as(new, inode);
}
+int security_kernel_module_request(void)
+{
+ return security_ops->kernel_module_request();
+}
+
int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
{
return security_ops->task_setuid(id0, id1, id2, flags);