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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 08:06:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 08:06:39 -0700
commitbb2cbf5e9367d8598fecd0c48dead69560750223 (patch)
treefb2c620451b90f41a31726bdd82077813f941e39 /fs
parente7fda6c4c3c1a7d6996dd75fd84670fa0b5d448f (diff)
parent478d085524c57cf4283699f529d5a4c22188ea69 (diff)
downloadlinux-bb2cbf5e9367d8598fecd0c48dead69560750223.tar.bz2
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris: "In this release: - PKCS#7 parser for the key management subsystem from David Howells - appoint Kees Cook as seccomp maintainer - bugfixes and general maintenance across the subsystem" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (94 commits) X.509: Need to export x509_request_asymmetric_key() netlabel: shorter names for the NetLabel catmap funcs/structs netlabel: fix the catmap walking functions netlabel: fix the horribly broken catmap functions netlabel: fix a problem when setting bits below the previously lowest bit PKCS#7: X.509 certificate issuer and subject are mandatory fields in the ASN.1 tpm: simplify code by using %*phN specifier tpm: Provide a generic means to override the chip returned timeouts tpm: missing tpm_chip_put in tpm_get_random() tpm: Properly clean sysfs entries in error path tpm: Add missing tpm_do_selftest to ST33 I2C driver PKCS#7: Use x509_request_asymmetric_key() Revert "selinux: fix the default socket labeling in sock_graft()" X.509: x509_request_asymmetric_keys() doesn't need string length arguments PKCS#7: fix sparse non static symbol warning KEYS: revert encrypted key change ima: add support for measuring and appraising firmware firmware_class: perform new LSM checks security: introduce kernel_fw_from_file hook PKCS#7: Missing inclusion of linux/err.h ...
Diffstat (limited to 'fs')
-rw-r--r--fs/exec.c6
-rw-r--r--fs/nfs/idmap.c10
-rw-r--r--fs/proc/array.c11
3 files changed, 12 insertions, 15 deletions
diff --git a/fs/exec.c b/fs/exec.c
index a3d33fe592d6..ab1f1200ce5d 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1216,7 +1216,7 @@ EXPORT_SYMBOL(install_exec_creds);
/*
* determine how safe it is to execute the proposed program
* - the caller must hold ->cred_guard_mutex to protect against
- * PTRACE_ATTACH
+ * PTRACE_ATTACH or seccomp thread-sync
*/
static void check_unsafe_exec(struct linux_binprm *bprm)
{
@@ -1234,7 +1234,7 @@ static void check_unsafe_exec(struct linux_binprm *bprm)
* This isn't strictly necessary, but it makes it harder for LSMs to
* mess up.
*/
- if (current->no_new_privs)
+ if (task_no_new_privs(current))
bprm->unsafe |= LSM_UNSAFE_NO_NEW_PRIVS;
t = p;
@@ -1272,7 +1272,7 @@ int prepare_binprm(struct linux_binprm *bprm)
bprm->cred->egid = current_egid();
if (!(bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID) &&
- !current->no_new_privs &&
+ !task_no_new_privs(current) &&
kuid_has_mapping(bprm->cred->user_ns, inode->i_uid) &&
kgid_has_mapping(bprm->cred->user_ns, inode->i_gid)) {
/* Set-uid? */
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index 567983d2c0eb..7dd55b745c4d 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -174,7 +174,9 @@ static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen)
static struct key_type key_type_id_resolver = {
.name = "id_resolver",
- .instantiate = user_instantiate,
+ .preparse = user_preparse,
+ .free_preparse = user_free_preparse,
+ .instantiate = generic_key_instantiate,
.match = user_match,
.revoke = user_revoke,
.destroy = user_destroy,
@@ -282,6 +284,8 @@ static struct key *nfs_idmap_request_key(const char *name, size_t namelen,
desc, "", 0, idmap);
mutex_unlock(&idmap->idmap_mutex);
}
+ if (!IS_ERR(rkey))
+ set_bit(KEY_FLAG_ROOT_CAN_INVAL, &rkey->flags);
kfree(desc);
return rkey;
@@ -394,7 +398,9 @@ static const struct rpc_pipe_ops idmap_upcall_ops = {
static struct key_type key_type_id_resolver_legacy = {
.name = "id_legacy",
- .instantiate = user_instantiate,
+ .preparse = user_preparse,
+ .free_preparse = user_free_preparse,
+ .instantiate = generic_key_instantiate,
.match = user_match,
.revoke = user_revoke,
.destroy = user_destroy,
diff --git a/fs/proc/array.c b/fs/proc/array.c
index d7f9199217bb..cd3653e4f35c 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -297,15 +297,11 @@ static void render_cap_t(struct seq_file *m, const char *header,
seq_puts(m, header);
CAP_FOR_EACH_U32(__capi) {
seq_printf(m, "%08x",
- a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
+ a->cap[CAP_LAST_U32 - __capi]);
}
seq_putc(m, '\n');
}
-/* Remove non-existent capabilities */
-#define NORM_CAPS(v) (v.cap[CAP_TO_INDEX(CAP_LAST_CAP)] &= \
- CAP_TO_MASK(CAP_LAST_CAP + 1) - 1)
-
static inline void task_cap(struct seq_file *m, struct task_struct *p)
{
const struct cred *cred;
@@ -319,11 +315,6 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
cap_bset = cred->cap_bset;
rcu_read_unlock();
- NORM_CAPS(cap_inheritable);
- NORM_CAPS(cap_permitted);
- NORM_CAPS(cap_effective);
- NORM_CAPS(cap_bset);
-
render_cap_t(m, "CapInh:\t", &cap_inheritable);
render_cap_t(m, "CapPrm:\t", &cap_permitted);
render_cap_t(m, "CapEff:\t", &cap_effective);