Marc BuergandGreg Kroah-Hartman 1682c442af sysctl: fix uninitialized variable in proc_do_large_bitmap ...

[ Upstream commit f63a9df7e3 ]

proc_do_large_bitmap() does not initialize variable c, which is expected
to be set to a trailing character by proc_get_long().

However, proc_get_long() only sets c when the input buffer contains a
trailing character after the parsed value.

If c is not initialized it may happen to contain a '-'. If this is the
case proc_do_large_bitmap() expects to be able to parse a second part of
the input buffer. If there is no second part an unjustified -EINVAL will
be returned.

Initialize c to 0 to prevent returning -EINVAL on valid input.

Fixes: 9f977fb7ae ("sysctl: add proc_do_large_bitmap")
Signed-off-by: Marc Buerg <buermarc@googlemail.com>
Reviewed-by: Joel Granados <joel.granados@kernel.org>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-04-18 10:31:06 +02:00

..

bpf

bpf: Forget ranges when refining tnum after JSET

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cgroup

cgroup: fix race between task migration and iteration

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configs

…

debug

kdb: Do not assume write() callback available

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dma

dma/pool: distinguish between missing and exhausted atomic pools

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entry

entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set

2023-01-04 11:39:22 +01:00

events

uprobe: Do not emulate/sstep original instruction when ip is changed

2025-12-07 06:08:10 +09:00

futex

futex: Don't include process MM in futex key on no-MMU

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gcov

gcov: add support for GCC 15

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irq

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kcsan

kcsan: Turn report_filterlist_lock into a raw_spinlock

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livepatch

livepatch: Match old_sympos 0 and 1 in klp_find_func()

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locking

locking/spinlock/debug: Fix data-race in do_raw_write_lock

2026-01-19 13:11:25 +01:00

power

PM: sleep: console: Fix the black screen issue

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printk

printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX

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rcu

rcu: Protect ->defer_qs_iw_pending from data race

2025-08-28 16:22:42 +02:00

sched

sched: idle: Consolidate the handling of two special cases

2026-04-18 10:31:02 +02:00

time

time/jiffies: Mark jiffies_64_to_clock_t() notrace

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trace

tracing: Fix syscall events activation by ensuring refcount hits zero

2026-04-18 10:30:59 +02:00

.gitignore

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acct.c

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async.c

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audit_fsnotify.c

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audit_tree.c

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audit_watch.c

fsnotify: pass flags argument to fsnotify_alloc_group()

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

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capability.c

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compat.c

sched_getaffinity: don't assume 'cpumask_size()' is fully initialized

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configs.c

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context_tracking.c

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cpu_pm.c

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cpu.c

hrtimers: Handle CPU state correctly on hotplug

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crash_core.c

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crash_dump.c

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cred.c

cred: switch to using atomic_long_t

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delayacct.c

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dma.c

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exec_domain.c

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exit.c

perf: Fix sample vs do_exit()

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extable.c

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fail_function.c

kernel/fail_function: fix memory leak with using debugfs_lookup()

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fork.c

unshare: fix unshare_fs() handling

2026-04-18 10:30:52 +02:00

freezer.c

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gen_kheaders.sh

kheaders: Ignore silly-rename files

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groups.c

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hung_task.c

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iomem.c

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irq_work.c

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jump_label.c

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kallsyms.c

kallsyms: Make kallsyms_on_each_symbol generally available

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kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

kcov: don't lose track of remote references during softirqs

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kexec_core.c

kexec: fix a memory leak in crash_shrink_memory()

2023-07-27 08:43:40 +02:00

kexec_elf.c

kexec: initialize ELF lowest address to ULONG_MAX

2025-04-10 14:30:58 +02:00

kexec_file.c

kexec: derive purgatory entry from symbol

2026-03-04 07:20:21 -05:00

kexec_internal.h

panic, kexec: make __crash_kexec() NMI safe

2023-04-20 12:10:29 +02:00

kexec.c

panic, kexec: make __crash_kexec() NMI safe

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kheaders.c

kheaders: Use array declaration instead of char

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kmod.c

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kprobes.c

x86/ibt,ftrace: Search for __fentry__ location

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ksysfs.c

kexec: turn all kexec_mutex acquisitions into trylocks

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kthread.c

kthread: fix task state in kthread worker if being frozen

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latencytop.c

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Makefile

futex: Move to kernel/futex/

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module_signature.c

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module_signing.c

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module-internal.h

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module.c

kallsyms: Make module_kallsyms_on_each_symbol generally available

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notifier.c

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nsproxy.c

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padata.c

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panic.c

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params.c

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pid_namespace.c

zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING

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pid.c

pid: Add a judgment for ns null in pid_nr_ns

2025-10-29 14:01:14 +01:00

profile.c

kernel: Initialize cpumask before parsing

2025-01-09 13:25:04 +01:00

ptrace.c

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range.c

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reboot.c

kernel/reboot: emergency_restart: Set correct system_state

2023-11-28 16:54:58 +00:00

regset.c

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relay.c

relayfs: fix out-of-bounds access in relay_file_read

2023-05-17 11:47:34 +02:00

resource.c

kernel/resource: fix kfree() of bootmem memory again

2025-05-02 07:41:09 +02:00

rseq.c

rseq: Fix segfault on registration when rseq_cs is non-zero

2025-07-17 18:28:01 +02:00

scftorture.c

scftorture: Forgive memory-allocation failure if KASAN

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scs.c

scs: fix a wrong parameter in __scs_magic

2026-01-19 13:11:50 +01:00

seccomp.c

seccomp: Invalidate seccomp mode to catch death failures

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signal.c

signal: Replace BUG_ON()s

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smp.c

smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()

2024-09-12 11:06:48 +02:00

smpboot.c

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smpboot.h

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softirq.c

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stackleak.c

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stacktrace.c

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static_call.c

x86/static-call: provide a way to do very early static-call updates

2024-12-19 18:06:13 +01:00

stop_machine.c

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sys_ni.c

syscalls: fix compat_sys_io_pgetevents_time64 usage

2024-07-05 09:12:55 +02:00

sys.c

fs: add file and path permissions helpers

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sysctl-test.c

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sysctl.c

sysctl: fix uninitialized variable in proc_do_large_bitmap

2026-04-18 10:31:06 +02:00

task_work.c

task_work: Introduce task_work_cancel() again

2024-08-19 05:40:57 +02:00

taskstats.c

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test_kprobes.c

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torture.c

torture: Fix hang during kthread shutdown phase

2023-08-30 16:23:17 +02:00

tracepoint.c

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tsacct.c

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ucount.c

ucount: check for CAP_SYS_RESOURCE using ns_capable_noaudit()

2026-03-04 07:19:35 -05:00

uid16.c

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uid16.h

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umh.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

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usermode_driver.c

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utsname_sysctl.c

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utsname.c

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watch_queue.c

watch_queue: fix pipe accounting mismatch

2025-04-10 14:30:55 +02:00

watchdog_hld.c

watchdog/perf: properly initialize the turbo mode timestamp and rearm counter

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watchdog.c

watchdog: move softlockup_panic back to early_param

2023-11-28 16:54:56 +00:00

workqueue_internal.h

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workqueue.c

Revert "workqueue: remove unused cancel_work()"

2023-12-08 08:46:13 +01:00