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OpenCloudOS-Kernel
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Merge branch 'audit.b32' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current 

* 'audit.b32' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] message types updated
  [PATCH] name_count array overrun
  [PATCH] PPID filtering fix
  [PATCH] arch filter lists with < or > should not be accepted
This commit is contained in:
Linus Torvalds 2006-10-04 08:15:55 -07:00
parent a0a00cbf8a c8e649ba90
commit 18e6756a6b
3 changed files with 34 additions and 6 deletions
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3
include/linux/audit.h
View File

@ -75,7 +75,7 @@
#define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
#define AUDIT_SYSCALL 1300 /* Syscall event */
#define AUDIT_FS_WATCH 1301 /* Filesystem watch event */
/* #define AUDIT_FS_WATCH 1301 * Deprecated */
#define AUDIT_PATH 1302 /* Filename path information */
#define AUDIT_IPC 1303 /* IPC record */
#define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
@ -88,6 +88,7 @@
#define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */
#define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */
#define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */
#define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */
#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */

9
kernel/auditfilter.c
View File

@ -411,7 +411,6 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
case AUDIT_FSGID:
case AUDIT_LOGINUID:
case AUDIT_PERS:
case AUDIT_ARCH:
case AUDIT_MSGTYPE:
case AUDIT_PPID:
case AUDIT_DEVMAJOR:
@ -423,6 +422,14 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
case AUDIT_ARG2:
case AUDIT_ARG3:
break;
/* arch is only allowed to be = or != */
case AUDIT_ARCH:
if ((f->op != AUDIT_NOT_EQUAL) && (f->op != AUDIT_EQUAL)
&& (f->op != AUDIT_NEGATE) && (f->op)) {
err = -EINVAL;
goto exit_free;
}
break;
case AUDIT_PERM:
if (f->val & ~15)
goto exit_free;

28
kernel/auditsc.c
View File

@ -278,8 +278,11 @@ static int audit_filter_rules(struct task_struct *tsk,
result = audit_comparator(tsk->pid, f->op, f->val);
break;
case AUDIT_PPID:
if (ctx)
if (ctx) {
if (!ctx->ppid)
ctx->ppid = sys_getppid();
result = audit_comparator(ctx->ppid, f->op, f->val);
}
break;
case AUDIT_UID:
result = audit_comparator(tsk->uid, f->op, f->val);
@ -795,7 +798,8 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
/* tsk == current */
context->pid = tsk->pid;
context->ppid = sys_getppid(); /* sic. tsk == current in all cases */
if (!context->ppid)
context->ppid = sys_getppid();
context->uid = tsk->uid;
context->gid = tsk->gid;
context->euid = tsk->euid;
@ -1137,6 +1141,7 @@ void audit_syscall_entry(int arch, int major,
context->ctime = CURRENT_TIME;
context->in_syscall = 1;
context->auditable = !!(state == AUDIT_RECORD_CONTEXT);
context->ppid = 0;
}
/**
@ -1352,7 +1357,13 @@ void __audit_inode_child(const char *dname, const struct inode *inode,
}
update_context:
idx = context->name_count++;
idx = context->name_count;
if (context->name_count == AUDIT_NAMES) {
printk(KERN_DEBUG "name_count maxed and losing %s\n",
found_name ?: "(null)");
return;
}
context->name_count++;
#if AUDIT_DEBUG
context->ino_count++;
#endif
@ -1370,7 +1381,16 @@ update_context:
/* A parent was not found in audit_names, so copy the inode data for the
* provided parent. */
if (!found_name) {
idx = context->name_count++;
idx = context->name_count;
if (context->name_count == AUDIT_NAMES) {
printk(KERN_DEBUG
"name_count maxed and losing parent inode data: dev=%02x:%02x, inode=%lu",
MAJOR(parent->i_sb->s_dev),
MINOR(parent->i_sb->s_dev),
parent->i_ino);
return;
}
context->name_count++;
#if AUDIT_DEBUG
context->ino_count++;
#endif