From: Linus Torvalds Date: Wed, 3 Oct 2012 04:38:48 +0000 (-0700) Subject: Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux... X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=88265322c14cce39f7afbc416726ef4fac413298;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Merge branch 'next' of git://git./linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - Integrity: add local fs integrity verification to detect offline attacks - Integrity: add digital signature verification - Simple stacking of Yama with other LSMs (per LSS discussions) - IBM vTPM support on ppc64 - Add new driver for Infineon I2C TIS TPM - Smack: add rule revocation for subject labels" Fixed conflicts with the user namespace support in kernel/auditsc.c and security/integrity/ima/ima_policy.c. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (39 commits) Documentation: Update git repository URL for Smack userland tools ima: change flags container data type Smack: setprocattr memory leak fix Smack: implement revoking all rules for a subject label Smack: remove task_wait() hook. ima: audit log hashes ima: generic IMA action flag handling ima: rename ima_must_appraise_or_measure audit: export audit_log_task_info tpm: fix tpm_acpi sparse warning on different address spaces samples/seccomp: fix 31 bit build on s390 ima: digital signature verification support ima: add support for different security.ima data types ima: add ima_inode_setxattr/removexattr function and calls ima: add inode_post_setattr call ima: replace iint spinblock with rwlock/read_lock ima: allocating iint improvements ima: add appraise action keywords and default rules ima: integrity appraisal extension vfs: move ima_file_free before releasing the file ... --- 88265322c14cce39f7afbc416726ef4fac413298 diff --cc drivers/char/tpm/tpm.c index 3af9f4d1a23f,6724615a4fdd..f26afdb1a702 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@@ -1172,10 -1168,10 +1168,10 @@@ int tpm_release(struct inode *inode, st struct tpm_chip *chip = file->private_data; del_singleshot_timer_sync(&chip->user_read_timer); - flush_work_sync(&chip->work); + flush_work(&chip->work); file->private_data = NULL; atomic_set(&chip->data_pending, 0); - kfree(chip->data_buffer); + kzfree(chip->data_buffer); clear_bit(0, &chip->is_open); put_device(chip->dev); return 0; @@@ -1225,9 -1221,8 +1221,8 @@@ ssize_t tpm_read(struct file *file, cha int rc; del_singleshot_timer_sync(&chip->user_read_timer); - flush_work_sync(&chip->work); + flush_work(&chip->work); ret_size = atomic_read(&chip->data_pending); - atomic_set(&chip->data_pending, 0); if (ret_size > 0) { /* relay data */ ssize_t orig_ret_size = ret_size; if (size < ret_size) diff --cc include/linux/audit.h index 12367cbadfe1,2a5073cf548a..e7c836d961ea --- a/include/linux/audit.h +++ b/include/linux/audit.h @@@ -639,9 -638,10 +640,10 @@@ extern int audit_signals #define audit_core_dumps(i) do { ; } while (0) #define audit_seccomp(i,s,c) do { ; } while (0) #define auditsc_get_stamp(c,t,s) (0) -#define audit_get_loginuid(t) (-1) +#define audit_get_loginuid(t) (INVALID_UID) #define audit_get_sessionid(t) (-1) #define audit_log_task_context(b) do { ; } while (0) + #define audit_log_task_info(b, t) do { ; } while (0) #define audit_ipc_obj(i) ((void)0) #define audit_ipc_set_perm(q,u,g,m) ((void)0) #define audit_bprm(p) ({ 0; }) diff --cc kernel/auditsc.c index ff4798fcb488,37f52f27828d..29e090cc0e46 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@@ -1151,8 -1160,32 +1152,38 @@@ void audit_log_task_info(struct audit_b char name[sizeof(tsk->comm)]; struct mm_struct *mm = tsk->mm; struct vm_area_struct *vma; + char *tty; + + if (!ab) + return; /* tsk == current */ + cred = current_cred(); + + spin_lock_irq(&tsk->sighand->siglock); + if (tsk->signal && tsk->signal->tty && tsk->signal->tty->name) + tty = tsk->signal->tty->name; + else + tty = "(none)"; + spin_unlock_irq(&tsk->sighand->siglock); + + + audit_log_format(ab, + " ppid=%ld pid=%d auid=%u uid=%u gid=%u" + " euid=%u suid=%u fsuid=%u" + " egid=%u sgid=%u fsgid=%u ses=%u tty=%s", + sys_getppid(), + tsk->pid, - tsk->loginuid, cred->uid, cred->gid, - cred->euid, cred->suid, cred->fsuid, - cred->egid, cred->sgid, cred->fsgid, ++ from_kuid(&init_user_ns, tsk->loginuid), ++ from_kuid(&init_user_ns, cred->uid), ++ from_kgid(&init_user_ns, cred->gid), ++ from_kuid(&init_user_ns, cred->euid), ++ from_kuid(&init_user_ns, cred->suid), ++ from_kuid(&init_user_ns, cred->fsuid), ++ from_kgid(&init_user_ns, cred->egid), ++ from_kgid(&init_user_ns, cred->sgid), ++ from_kgid(&init_user_ns, cred->fsgid), + tsk->sessionid, tty); get_task_comm(name, tsk); audit_log_format(ab, " comm="); @@@ -1175,8 -1208,10 +1206,10 @@@ audit_log_task_context(ab); } + EXPORT_SYMBOL(audit_log_task_info); + static int audit_log_pid_context(struct audit_context *context, pid_t pid, - uid_t auid, uid_t uid, unsigned int sessionid, + kuid_t auid, kuid_t uid, unsigned int sessionid, u32 sid, char *comm) { struct audit_buffer *ab; diff --cc security/integrity/ima/ima_policy.c index c84df05180cb,cda903131dbf..c7dacd2eab7a --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@@ -39,7 -45,8 +45,8 @@@ struct ima_rule_entry enum ima_hooks func; int mask; unsigned long fsmagic; - uid_t uid; - uid_t fowner; + kuid_t uid; ++ kuid_t fowner; struct { void *rule; /* LSM file metadata specific */ int type; /* audit type */ @@@ -75,14 -82,28 +82,28 @@@ static struct ima_rule_entry default_ru .flags = IMA_FUNC | IMA_MASK | IMA_UID}, }; - static LIST_HEAD(measure_default_rules); - static LIST_HEAD(measure_policy_rules); - static struct list_head *ima_measure; + static struct ima_rule_entry default_appraise_rules[] = { + {.action = DONT_APPRAISE,.fsmagic = PROC_SUPER_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = SYSFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = DEBUGFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = TMPFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = RAMFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = DEVPTS_SUPER_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = BINFMTFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = SECURITYFS_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = SELINUX_MAGIC,.flags = IMA_FSMAGIC}, + {.action = DONT_APPRAISE,.fsmagic = CGROUP_SUPER_MAGIC,.flags = IMA_FSMAGIC}, - {.action = APPRAISE,.fowner = 0,.flags = IMA_FOWNER}, ++ {.action = APPRAISE,.fowner = GLOBAL_ROOT_UID,.flags = IMA_FOWNER}, + }; + + static LIST_HEAD(ima_default_rules); + static LIST_HEAD(ima_policy_rules); + static struct list_head *ima_rules; - static DEFINE_MUTEX(ima_measure_mutex); + static DEFINE_MUTEX(ima_rules_mutex); static bool ima_use_tcb __initdata; - static int __init default_policy_setup(char *str) + static int __init default_measure_policy_setup(char *str) { ima_use_tcb = 1; return 1; @@@ -112,8 -141,10 +141,10 @@@ static bool ima_match_rules(struct ima_ if ((rule->flags & IMA_FSMAGIC) && rule->fsmagic != inode->i_sb->s_magic) return false; - if ((rule->flags & IMA_UID) && rule->uid != cred->uid) + if ((rule->flags & IMA_UID) && !uid_eq(rule->uid, cred->uid)) return false; - if ((rule->flags & IMA_FOWNER) && rule->fowner != inode->i_uid) ++ if ((rule->flags & IMA_FOWNER) && !uid_eq(rule->fowner, inode->i_uid)) + return false; for (i = 0; i < MAX_LSM_RULES; i++) { int rc = 0; u32 osid, sid; @@@ -277,7 -336,8 +336,8 @@@ static int ima_parse_rule(char *rule, s ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_INTEGRITY_RULE); - entry->uid = -1; - entry->fowner = -1; + entry->uid = INVALID_UID; ++ entry->fowner = INVALID_UID; entry->action = UNKNOWN; while ((p = strsep(&rule, " \t")) != NULL) { substring_t args[MAX_OPT_ARGS]; @@@ -375,6 -459,23 +459,23 @@@ entry->flags |= IMA_UID; } break; + case Opt_fowner: + ima_log_string(ab, "fowner", args[0].from); + - if (entry->fowner != -1) { ++ if (uid_valid(entry->fowner)) { + result = -EINVAL; + break; + } + + result = strict_strtoul(args[0].from, 10, &lnum); + if (!result) { - entry->fowner = (uid_t) lnum; - if (entry->fowner != lnum) ++ entry->fowner = make_kuid(current_user_ns(), (uid_t)lnum); ++ if (!uid_valid(entry->fowner) || (((uid_t)lnum) != lnum)) + result = -EINVAL; + else + entry->flags |= IMA_FOWNER; + } + break; case Opt_obj_user: ima_log_string(ab, "obj_user", args[0].from); result = ima_lsm_rule_init(entry, args[0].from,