Kees Cook cec9fbfe39 module: Correctly truncate sysfs sections output ... commit 11990a5bd7 upstream. The only-root-readable /sys/module/$module/sections/$section files did not truncate their output to the available buffer size. While most paths into the kernfs read handlers end up using PAGE_SIZE buffers, it's possible to get there through other paths (e.g. splice, sendfile). Actually limit the output to the "count" passed into the read function, and report it back correctly. *sigh* Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/lkml/20200805002015.GE23458@shao2-debian Fixes: ed66f991bb ("module: Refactor section attr into bin attribute") Cc: stable@vger.kernel.org Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-08-21 11:05:34 +02:00
..
bpf	bpf: Fix map leak in HASH_OF_MAPS map	2020-08-05 10:06:03 +02:00
cgroup	cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone()	2020-08-19 08:14:47 +02:00
configs
debug	kgdb: Avoid suspicious RCU usage warning	2020-07-09 09:37:10 +02:00
dma
events	uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression	2020-07-29 10:16:47 +02:00
gcov	kernel/gcov/fs.c: gcov_seq_next() should increase position index	2020-04-29 16:31:12 +02:00
irq	genirq/affinity: Make affinity setting if activated opt-in	2020-08-21 11:05:28 +02:00
livepatch
locking	locktorture: Print ratio of acquisitions, not failures	2020-04-23 10:30:23 +02:00
power	PM: hibernate: Freeze kernel threads in software_resume()	2020-05-06 08:13:28 +02:00
printk	printk: queue wake_up_klogd irq_work only if per-CPU areas are ready	2020-07-22 09:32:13 +02:00
rcu	rcu: Avoid data-race in rcu_gp_fqs_check_wake()	2020-02-11 04:33:55 -08:00
sched	sched: correct SD_flags returned by tl->sd_flags()	2020-08-19 08:14:47 +02:00
time	random32: update the net random state on interrupt and activity	2020-08-07 09:36:20 +02:00
trace	tracing: Use trace_sched_process_free() instead of exit() for pid tracing	2020-08-21 11:05:33 +02:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:05:13 +02:00
audit.h	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:05:13 +02:00
auditfilter.c	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:05:13 +02:00
auditsc.c
backtracetest.c
bounds.c
capability.c	LSM: generalize flag passing to security_capable	2020-01-23 08:21:29 +01:00
compat.c	make 'user_access_begin()' do 'access_ok()'	2020-06-22 09:04:58 +02:00
configs.c
context_tracking.c
cpu_pm.c	kernel/cpu_pm: Fix uninitted local in cpu_pm	2020-06-22 09:05:28 +02:00
cpu.c	sched/core: Fix illegal RCU from offline CPUs	2020-06-22 09:05:14 +02:00
crash_core.c
crash_dump.c
cred.c	memcg: account security cred as well to kmemcg	2020-01-09 10:19:00 +01:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	exit: Move preemption fixup up, move blocking operations down	2020-06-22 09:05:14 +02:00
extable.c
fail_function.c
fork.c	fork,memcg: alloc_thread_stack_node needs to set tsk->stack	2020-01-27 14:50:58 +01:00
freezer.c
futex.c	futex: Unbreak futex hashing	2020-03-25 08:06:14 +01:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c	kallsyms: Refactor kallsyms_show_value() to take cred	2020-07-16 08:17:26 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c	kmod: make request_module() return an error when autoloading is disabled	2020-04-17 10:48:52 +02:00
kprobes.c	kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler	2020-08-21 11:05:33 +02:00
ksysfs.c
kthread.c
latencytop.c
Makefile
memremap.c	mm/memory_hotplug: shrink zones when offlining memory	2020-01-29 16:43:27 +01:00
module_signing.c
module-internal.h
module.c	module: Correctly truncate sysfs sections output	2020-08-21 11:05:34 +02:00
notifier.c	x86/mm: split vmalloc_sync_all()	2020-03-25 08:06:13 +01:00
nsproxy.c
padata.c	padata: purge get_cpu and reorder_via_wq from padata_do_serial	2020-05-27 17:37:36 +02:00
panic.c
params.c
pid_namespace.c
pid.c
profile.c
ptrace.c	ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()	2020-01-23 08:21:29 +01:00
range.c
reboot.c
relay.c	kernel/relay.c: handle alloc_percpu returning NULL in relay_open	2020-06-07 13:17:54 +02:00
resource.c
rseq.c
seccomp.c	LSM: generalize flag passing to security_capable	2020-01-23 08:21:29 +01:00
signal.c	signal: Extend exec_id to 64bits	2020-04-17 10:48:47 +02:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_binary.c
sysctl.c
task_work.c
taskstats.c	taskstats: fix data-race	2020-01-09 10:18:59 +01:00
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	coredump: fix crash when umh is disabled	2020-05-14 07:57:21 +02:00
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c	watchdog/softlockup: Enforce that timestamp is valid on boot	2020-02-24 08:34:49 +01:00
workqueue_internal.h
workqueue.c	workqueue: don't use wq_select_unbound_cpu() for bound works	2020-03-18 07:14:20 +01:00