linux/kernel/auditsc.c, branch v3.16

auditsc: audit_krule mask accesses need bounds checking

2014-06-10T15:44:40Z

Fixes an easy DoS and possible information disclosure. This does nothing about the broken state of x32 auditing. eparis: If the admin has enabled auditd and has specifically loaded audit rules. This bug has been around since before git. Wow... Cc: stable@vger.kernel.org Signed-off-by: Andy Lutomirski Signed-off-by: Eric Paris Signed-off-by: Linus Torvalds

Merge git://git.infradead.org/users/eparis/audit

2014-04-12T19:38:53Z

Pull audit updates from Eric Paris. * git://git.infradead.org/users/eparis/audit: (28 commits) AUDIT: make audit_is_compat depend on CONFIG_AUDIT_COMPAT_GENERIC audit: renumber AUDIT_FEATURE_CHANGE into the 1300 range audit: do not cast audit_rule_data pointers pointlesly AUDIT: Allow login in non-init namespaces audit: define audit_is_compat in kernel internal header kernel: Use RCU_INIT_POINTER(x, NULL) in audit.c sched: declare pid_alive as inline audit: use uapi/linux/audit.h for AUDIT_ARCH declarations syscall_get_arch: remove useless function arguments audit: remove stray newline from audit_log_execve_info() audit_panic() call audit: remove stray newlines from audit_log_lost messages audit: include subject in login records audit: remove superfluous new- prefix in AUDIT_LOGIN messages audit: allow user processes to log from another PID namespace audit: anchor all pid references in the initial pid namespace audit: convert PPIDs to the inital PID namespace. pid: get pid_t ppid of task in init_pid_ns audit: rename the misleading audit_get_context() to audit_take_context() audit: Add generic compat syscall support audit: Add CONFIG_HAVE_ARCH_AUDITSYSCALL ...

audit: remove stray newline from audit_log_execve_info() audit_panic() call

2014-03-20T14:11:58Z

There's an unnecessary use of a \n in audit_panic. Signed-off-by: Richard Guy Briggs

audit: include subject in login records

2014-03-20T14:11:57Z

The login uid change record does not include the selinux context of the task logging in. Add that information. (Updated from 2011-01: RHBZ:670328 -- RGB) Reported-by: Steve Grubb Acked-by: James Morris Signed-off-by: Eric Paris Signed-off-by: Aristeu Rozanski Signed-off-by: Richard Guy Briggs

audit: remove superfluous new- prefix in AUDIT_LOGIN messages

2014-03-20T14:11:57Z

The new- prefix on ses and auid are un-necessary and break ausearch. Signed-off-by: Richard Guy Briggs

audit: anchor all pid references in the initial pid namespace

2014-03-20T14:11:55Z

Store and log all PIDs with reference to the initial PID namespace and use the access functions task_pid_nr() and task_tgid_nr() for task->pid and task->tgid. Cc: "Eric W. Biederman" (informed by ebiederman's c776b5d2) Signed-off-by: Richard Guy Briggs

audit: convert PPIDs to the inital PID namespace.

2014-03-20T14:11:55Z

sys_getppid() returns the parent pid of the current process in its own pid namespace. Since audit filters are based in the init pid namespace, a process could avoid a filter or trigger an unintended one by being in an alternate pid namespace or log meaningless information. Switch to task_ppid_nr() for PPIDs to anchor all audit filters in the init_pid_ns. (informed by ebiederman's 6c621b7e) Cc: stable@vger.kernel.org Cc: Eric W. Biederman Signed-off-by: Richard Guy Briggs

audit: rename the misleading audit_get_context() to audit_take_context()

2014-03-20T14:11:54Z

"get" usually implies incrementing a refcount into a structure to indicate a reference being held by another part of code. Change this function name to indicate it is in fact being taken from it, returning the value while clearing it in the supplying structure. Signed-off-by: Richard Guy Briggs

audit: Audit proc//cmdline aka proctitle

2014-03-20T14:10:52Z

During an audit event, cache and print the value of the process's proctitle value (proc//cmdline). This is useful in situations where processes are started via fork'd virtual machines where the comm field is incorrect. Often times, setting the comm field still is insufficient as the comm width is not very wide and most virtual machine "package names" do not fit. Also, during execution, many threads have their comm field set as well. By tying it back to the global cmdline value for the process, audit records will be more complete in systems with these properties. An example of where this is useful and applicable is in the realm of Android. With Android, their is no fork/exec for VM instances. The bare, preloaded Dalvik VM listens for a fork and specialize request. When this request comes in, the VM forks, and the loads the specific application (specializing). This was done to take advantage of COW and to not require a load of basic packages by the VM on very app spawn. When this spawn occurs, the package name is set via setproctitle() and shows up in procfs. Many of these package names are longer then 16 bytes, the historical width of task->comm. Having the cmdline in the audit records will couple the application back to the record directly. Also, on my Debian development box, some audit records were more useful then what was printed under comm. The cached proctitle is tied to the life-cycle of the audit_context structure and is built on demand. Proctitle is controllable by userspace, and thus should not be trusted. It is meant as an aid to assist in debugging. The proctitle event is emitted during syscall audits, and can be filtered with auditctl. Example: type=AVC msg=audit(1391217013.924:386): avc: denied { getattr } for pid=1971 comm="mkdir" name="/" dev="selinuxfs" ino=1 scontext=system_u:system_r:consolekit_t:s0-s0:c0.c255 tcontext=system_u:object_r:security_t:s0 tclass=filesystem type=SYSCALL msg=audit(1391217013.924:386): arch=c000003e syscall=137 success=yes exit=0 a0=7f019dfc8bd7 a1=7fffa6aed2c0 a2=fffffffffff4bd25 a3=7fffa6aed050 items=0 ppid=1967 pid=1971 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="mkdir" exe="/bin/mkdir" subj=system_u:system_r:consolekit_t:s0-s0:c0.c255 key=(null) type=UNKNOWN[1327] msg=audit(1391217013.924:386): proctitle=6D6B646972002D70002F7661722F72756E2F636F6E736F6C65 Acked-by: Steve Grubb (wrt record formating) Signed-off-by: William Roberts Signed-off-by: Eric Paris

audit: Use more current logging style again

2014-03-07T16:48:15Z

Add pr_fmt to prefix "audit: " to output Convert printk(KERN_ to pr_ Coalesce formats Signed-off-by: Richard Guy Briggs