Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Christian Brauner 8acbf4a88c acct: perform last write from workqueue ... [ Upstream commit 56d5f3eba3f5de0efdd556de4ef381e109b973a9 ] In [1] it was reported that the acct(2) system call can be used to trigger NULL deref in cases where it is set to write to a file that triggers an internal lookup. This can e.g., happen when pointing acc(2) to /sys/power/resume. At the point the where the write to this file happens the calling task has already exited and called exit_fs(). A lookup will thus trigger a NULL-deref when accessing current->fs. Reorganize the code so that the the final write happens from the workqueue but with the caller's credentials. This preserves the (strange) permission model and has almost no regression risk. This api should stop to exist though. Link: https://lore.kernel.org/r/20250127091811.3183623-1-quzicheng@huawei.com [1] Link: https://lore.kernel.org/r/20250211-work-acct-v1-1-1c16aecab8b3@kernel.org Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Reported-by: Zicheng Qu <quzicheng@huawei.com> Cc: stable@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-03-13 12:43:26 +01:00
..
bpf	bpf: fix potential error return	2025-01-09 13:23:36 +01:00
cgroup	cgroup: Make operations on the cgroup root_list RCU safe	2024-12-14 19:44:35 +01:00
configs
debug	kdb: Use the passed prompt in kdb_position_cursor()	2024-08-19 05:33:40 +02:00
dma	dma: fix call order in dmam_free_coherent	2024-08-19 05:33:41 +02:00
events	perf/core: Fix low freq setting via IOC_PERIOD	2025-03-13 12:43:25 +01:00
gcov	gcov: add support for GCC 14	2024-07-05 09:08:24 +02:00
irq	genirq/irqdesc: Honor caller provided affinity in alloc_desc()	2024-08-19 05:33:52 +02:00
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 13:22:18 +02:00
locking	lockdep: fix deadlock issue between lockdep and rcu	2024-11-08 16:20:46 +01:00
power	PM: hibernate: Add error handling for syscore_suspend()	2025-03-13 12:42:59 +01:00
printk	printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX	2025-03-13 12:43:02 +01:00
rcu	rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment	2024-07-05 09:08:20 +02:00
sched	sched/core: Prevent rescheduling when interrupts are disabled	2025-03-13 12:43:25 +01:00
time	hrtimers: Handle CPU state correctly on hotplug	2025-02-01 18:18:51 +01:00
trace	ftrace: Avoid potential division by zero in function_stat_show()	2025-03-13 12:43:25 +01:00
.gitignore
acct.c	acct: perform last write from workqueue	2025-03-13 12:43:26 +01:00
async.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
audit.c	audit: Send netlink ACK before setting connection in auditd_set	2024-02-23 08:24:54 +01:00
audit.h
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-09-05 10:27:38 +02:00
audit_tree.c
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2023-11-28 16:50:18 +00:00
auditfilter.c
auditsc.c	audit: fix possible soft lockup in __audit_inode_child()	2023-09-23 10:59:46 +02:00
backtracetest.c	treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()	2023-04-20 12:07:32 +02:00
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-05-02 16:18:37 +02:00
capability.c
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-04-05 11:16:42 +02:00
configs.c
context_tracking.c
cpu.c	hrtimers: Handle CPU state correctly on hotplug	2025-02-01 18:18:51 +01:00
cpu_pm.c
crash_core.c
crash_dump.c
cred.c	cred: switch to using atomic_long_t	2023-12-20 15:41:18 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c	mm: optimize the redundant loop of mm_update_owner_next()	2024-07-18 11:40:51 +02:00
extable.c	kernel/extable.c: use address-of operator on section symbols	2023-06-09 10:29:01 +02:00
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-03-11 16:44:15 +01:00
fork.c	kernel/fork: beware of __put_task_struct() calling context	2023-09-23 11:00:03 +02:00
freezer.c
futex.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
gen_kheaders.sh	kheaders: Ignore silly-rename files	2025-02-01 18:18:51 +01:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-07-27 08:37:10 +02:00
kexec_elf.c
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-06-21 15:44:10 +02:00
kexec_internal.h
kheaders.c	kheaders: Use array declaration instead of char	2023-05-17 11:35:33 +02:00
kmod.c
kprobes.c	kprobes: Fix possible use-after-free issue on kprobe registration	2024-05-02 16:18:30 +02:00
ksysfs.c
kthread.c	kthread: fix task state in kthread worker if being frozen	2024-11-08 16:20:30 +01:00
latencytop.c
Makefile
module-internal.h
module.c	modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules	2023-09-23 10:59:36 +02:00
module_signature.c
module_signing.c
notifier.c
nsproxy.c
padata.c	padata: fix sysfs store callback check	2025-03-13 12:42:56 +01:00
panic.c	panic: Flush kernel log buffer at the end	2024-04-13 12:51:37 +02:00
params.c	params: lift param_set_uint_minmax to common code	2024-06-16 13:28:45 +02:00
pid.c
pid_namespace.c
profile.c	profiling: fix shift too large makes kernel panic	2022-08-25 11:18:02 +02:00
ptrace.c
range.c
reboot.c	kernel/reboot: emergency_restart: Set correct system_state	2023-11-28 16:50:19 +00:00
relay.c	relayfs: fix out-of-bounds access in relay_file_read	2023-05-17 11:35:58 +02:00
resource.c	resource: fix region_intersects() vs add_memory_driver_managed()	2024-11-08 16:20:46 +01:00
rseq.c
seccomp.c
signal.c	signal: Replace BUG_ON()s	2024-11-08 16:20:38 +01:00
smp.c	smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()	2024-09-12 11:03:54 +02:00
smpboot.c
smpboot.h
softirq.c	tasklet: Introduce new initialization API	2025-03-13 12:43:04 +01:00
stackleak.c
stacktrace.c
stop_machine.c
sys.c	getrusage: use sig->stats_lock rather than lock_task_sighand()	2024-03-15 10:48:19 -04:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-09-05 10:27:38 +02:00
sysctl-test.c
sysctl.c	sched/rt: Disallow writing invalid values to sched_rt_period_us	2024-03-01 13:13:33 +01:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-08-25 11:18:37 +02:00
watchdog_hld.c	watchdog/perf: properly initialize the turbo mode timestamp and rearm counter	2024-08-19 05:33:39 +02:00
workqueue.c	workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()	2023-10-25 11:53:18 +02:00
workqueue_internal.h