summaryrefslogtreecommitdiffstats
path: root/security/apparmor
diff options
context:
space:
mode:
Diffstat (limited to 'security/apparmor')
-rw-r--r--security/apparmor/audit.c11
-rw-r--r--security/apparmor/capability.c4
-rw-r--r--security/apparmor/domain.c35
-rw-r--r--security/apparmor/file.c2
-rw-r--r--security/apparmor/include/audit.h1
-rw-r--r--security/apparmor/ipc.c2
-rw-r--r--security/apparmor/lib.c2
-rw-r--r--security/apparmor/lsm.c6
-rw-r--r--security/apparmor/path.c2
-rw-r--r--security/apparmor/policy.c6
-rw-r--r--security/apparmor/policy_unpack.c2
-rw-r--r--security/apparmor/resource.c2
12 files changed, 62 insertions, 13 deletions
diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
index cc3520d39a7..3ae28db5a64 100644
--- a/security/apparmor/audit.c
+++ b/security/apparmor/audit.c
@@ -111,7 +111,7 @@ static const char *const aa_audit_type[] = {
static void audit_pre(struct audit_buffer *ab, void *ca)
{
struct common_audit_data *sa = ca;
- struct task_struct *tsk = sa->tsk ? sa->tsk : current;
+ struct task_struct *tsk = sa->aad->tsk ? sa->aad->tsk : current;
if (aa_g_audit_header) {
audit_log_format(ab, "apparmor=");
@@ -149,6 +149,12 @@ static void audit_pre(struct audit_buffer *ab, void *ca)
audit_log_format(ab, " name=");
audit_log_untrustedstring(ab, sa->aad->name);
}
+
+ if (sa->aad->tsk) {
+ audit_log_format(ab, " pid=%d comm=", tsk->pid);
+ audit_log_untrustedstring(ab, tsk->comm);
+ }
+
}
/**
@@ -205,7 +211,8 @@ int aa_audit(int type, struct aa_profile *profile, gfp_t gfp,
aa_audit_msg(type, sa, cb);
if (sa->aad->type == AUDIT_APPARMOR_KILL)
- (void)send_sig_info(SIGKILL, NULL, sa->tsk ? sa->tsk : current);
+ (void)send_sig_info(SIGKILL, NULL,
+ sa->aad->tsk ? sa->aad->tsk : current);
if (sa->aad->type == AUDIT_APPARMOR_ALLOWED)
return complain_error(sa->aad->error);
diff --git a/security/apparmor/capability.c b/security/apparmor/capability.c
index 088dba3bf7d..887a5e94894 100644
--- a/security/apparmor/capability.c
+++ b/security/apparmor/capability.c
@@ -65,10 +65,10 @@ static int audit_caps(struct aa_profile *profile, struct task_struct *task,
int type = AUDIT_APPARMOR_AUTO;
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, CAP);
+ sa.type = LSM_AUDIT_DATA_CAP;
sa.aad = &aad;
- sa.tsk = task;
sa.u.cap = cap;
+ sa.aad->tsk = task;
sa.aad->op = OP_CAPABLE;
sa.aad->error = error;
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 6327685c101..b81ea10a17a 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -394,6 +394,11 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
new_profile = find_attach(ns, &ns->base.profiles, name);
if (!new_profile)
goto cleanup;
+ /*
+ * NOTE: Domain transitions from unconfined are allowed
+ * even when no_new_privs is set because this aways results
+ * in a further reduction of permissions.
+ */
goto apply;
}
@@ -455,6 +460,16 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
/* fail exec */
error = -EACCES;
+ /*
+ * Policy has specified a domain transition, if no_new_privs then
+ * fail the exec.
+ */
+ if (bprm->unsafe & LSM_UNSAFE_NO_NEW_PRIVS) {
+ aa_put_profile(new_profile);
+ error = -EPERM;
+ goto cleanup;
+ }
+
if (!new_profile)
goto audit;
@@ -609,6 +624,14 @@ int aa_change_hat(const char *hats[], int count, u64 token, bool permtest)
const char *target = NULL, *info = NULL;
int error = 0;
+ /*
+ * Fail explicitly requested domain transitions if no_new_privs.
+ * There is no exception for unconfined as change_hat is not
+ * available.
+ */
+ if (current->no_new_privs)
+ return -EPERM;
+
/* released below */
cred = get_current_cred();
cxt = cred->security;
@@ -750,6 +773,18 @@ int aa_change_profile(const char *ns_name, const char *hname, bool onexec,
cxt = cred->security;
profile = aa_cred_profile(cred);
+ /*
+ * Fail explicitly requested domain transitions if no_new_privs
+ * and not unconfined.
+ * Domain transitions from unconfined are allowed even when
+ * no_new_privs is set because this aways results in a reduction
+ * of permissions.
+ */
+ if (current->no_new_privs && !unconfined(profile)) {
+ put_cred(cred);
+ return -EPERM;
+ }
+
if (ns_name) {
/* released below */
ns = aa_find_namespace(profile->ns, ns_name);
diff --git a/security/apparmor/file.c b/security/apparmor/file.c
index 2f8fcba9ce4..cf19d4093ca 100644
--- a/security/apparmor/file.c
+++ b/security/apparmor/file.c
@@ -108,7 +108,7 @@ int aa_audit_file(struct aa_profile *profile, struct file_perms *perms,
int type = AUDIT_APPARMOR_AUTO;
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.op = op,
aad.fs.request = request;
diff --git a/security/apparmor/include/audit.h b/security/apparmor/include/audit.h
index 3868b1e5d5b..4b7e18951ae 100644
--- a/security/apparmor/include/audit.h
+++ b/security/apparmor/include/audit.h
@@ -110,6 +110,7 @@ struct apparmor_audit_data {
void *profile;
const char *name;
const char *info;
+ struct task_struct *tsk;
union {
void *target;
struct {
diff --git a/security/apparmor/ipc.c b/security/apparmor/ipc.c
index c3da93a5150..cf1071b1423 100644
--- a/security/apparmor/ipc.c
+++ b/security/apparmor/ipc.c
@@ -42,7 +42,7 @@ static int aa_audit_ptrace(struct aa_profile *profile,
{
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.op = OP_PTRACE;
aad.target = target;
diff --git a/security/apparmor/lib.c b/security/apparmor/lib.c
index e75829ba0ff..7430298116d 100644
--- a/security/apparmor/lib.c
+++ b/security/apparmor/lib.c
@@ -66,7 +66,7 @@ void aa_info_message(const char *str)
if (audit_enabled) {
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.info = str;
aa_audit_msg(AUDIT_APPARMOR_STATUS, &sa, NULL);
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index ad05d391974..032daab449b 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -373,7 +373,7 @@ static int apparmor_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
AA_MAY_META_READ);
}
-static int apparmor_dentry_open(struct file *file, const struct cred *cred)
+static int apparmor_file_open(struct file *file, const struct cred *cred)
{
struct aa_file_cxt *fcxt = file->f_security;
struct aa_profile *profile;
@@ -589,7 +589,7 @@ static int apparmor_setprocattr(struct task_struct *task, char *name,
} else {
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.op = OP_SETPROCATTR;
aad.info = name;
@@ -640,9 +640,9 @@ static struct security_operations apparmor_ops = {
.path_chmod = apparmor_path_chmod,
.path_chown = apparmor_path_chown,
.path_truncate = apparmor_path_truncate,
- .dentry_open = apparmor_dentry_open,
.inode_getattr = apparmor_inode_getattr,
+ .file_open = apparmor_file_open,
.file_permission = apparmor_file_permission,
.file_alloc_security = apparmor_file_alloc_security,
.file_free_security = apparmor_file_free_security,
diff --git a/security/apparmor/path.c b/security/apparmor/path.c
index 2daeea4f926..e91ffee8016 100644
--- a/security/apparmor/path.c
+++ b/security/apparmor/path.c
@@ -94,6 +94,8 @@ static int d_namespace_path(struct path *path, char *buf, int buflen,
* be returned.
*/
if (!res || IS_ERR(res)) {
+ if (PTR_ERR(res) == -ENAMETOOLONG)
+ return -ENAMETOOLONG;
connected = 0;
res = dentry_path_raw(path->dentry, buf, buflen);
if (IS_ERR(res)) {
diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c
index f1f7506a464..cf5fd220309 100644
--- a/security/apparmor/policy.c
+++ b/security/apparmor/policy.c
@@ -903,6 +903,10 @@ struct aa_profile *aa_lookup_profile(struct aa_namespace *ns, const char *hname)
profile = aa_get_profile(__lookup_profile(&ns->base, hname));
read_unlock(&ns->lock);
+ /* the unconfined profile is not in the regular profile list */
+ if (!profile && strcmp(hname, "unconfined") == 0)
+ profile = aa_get_profile(ns->unconfined);
+
/* refcount released by caller */
return profile;
}
@@ -965,7 +969,7 @@ static int audit_policy(int op, gfp_t gfp, const char *name, const char *info,
{
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.op = op;
aad.name = name;
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index deab7c7e8dc..329b1fd3074 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -95,7 +95,7 @@ static int audit_iface(struct aa_profile *new, const char *name,
struct aa_profile *profile = __aa_current_profile();
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
if (e)
aad.iface.pos = e->pos - e->start;
diff --git a/security/apparmor/resource.c b/security/apparmor/resource.c
index 2fe8613efe3..e1f3d7ef2c5 100644
--- a/security/apparmor/resource.c
+++ b/security/apparmor/resource.c
@@ -52,7 +52,7 @@ static int audit_resource(struct aa_profile *profile, unsigned int resource,
struct common_audit_data sa;
struct apparmor_audit_data aad = {0,};
- COMMON_AUDIT_DATA_INIT(&sa, NONE);
+ sa.type = LSM_AUDIT_DATA_NONE;
sa.aad = &aad;
aad.op = OP_SETRLIMIT,
aad.rlim.rlim = resource;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 13:25:55 +0000