Thorsten Blum de5d0652d0 proc: use strnlen() for name validation in __proc_create ...

Replace strlen(fn) with strnlen(fn, NAME_MAX + 1) when validating the
final path component in __proc_create().

This preserves the existing name limit while bounding the length scan to
one byte past the maximum name length.  Handle empty names separately, and
treat names longer than NAME_MAX as too long.

Link: https://lore.kernel.org/20260421122648.56723-2-thorsten.blum@linux.dev
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Thorsten Blum <thorsten.blum@linux.dev>
Cc: wangzijie <wangzijie1@honor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2026-05-28 21:24:39 -07:00

..

array.c

proc: array: drop stale FIXME about RCU in task_sig()

2026-03-27 21:19:32 -07:00

base.c

proc: rewrite next_tgid()

2026-05-28 21:24:39 -07:00

bootconfig.c

fs/proc: Skip bootloader comment if no embedded kernel parameters

2024-04-09 23:36:18 +09:00

cmdline.c

…

consoles.c

proc: Add nbcon support for /proc/consoles

2024-09-04 15:56:33 +02:00

cpuinfo.c

…

devices.c

…

fd.c

Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-13 14:20:11 -07:00

fd.h

…

generic.c

proc: use strnlen() for name validation in __proc_create

2026-05-28 21:24:39 -07:00

inode.c

fs/proc: replace "__auto_type" with "const auto"

2025-12-08 15:32:15 -08:00

internal.h

proc: rename proc_setattr to proc_nochmod_setattr

2026-03-26 15:16:54 +01:00

interrupts.c

fs/procfs: Switch to irq_get_nr_irqs()

2024-10-16 21:56:59 +02:00

Kconfig

virtio-mem: support CONFIG_PROC_VMCORE_DEVICE_RAM

2025-01-27 09:39:25 -05:00

kcore.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

kmsg.c

…

loadavg.c

…

Makefile

kbuild: make -Woverride-init warnings more consistent

2024-03-31 11:32:26 +09:00

meminfo.c

Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-04-15 12:59:16 -07:00

namespaces.c

proc: rename proc_setattr to proc_nochmod_setattr

2026-03-26 15:16:54 +01:00

nommu.c

…

page.c

fs/proc/page: remove unused KPMBITS

2025-11-20 14:03:42 -08:00

proc_net.c

proc: rename proc_setattr to proc_nochmod_setattr

2026-03-26 15:16:54 +01:00

proc_sysctl.c

Merge tag 'pull-dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2025-07-28 09:17:57 -07:00

proc_tty.c

…

root.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

self.c

fs/proc: Don't lock root inode when creating "self" and "thread-self"

2026-03-06 10:24:11 +01:00

softirqs.c

proc/softirqs: replace seq_printf with seq_put_decimal_ull_width

2024-11-07 07:40:14 -10:00

stat.c

fs/procfs: Switch to irq_get_nr_irqs()

2024-10-16 21:56:59 +02:00

task_mmu.c

treewide: change inode->i_ino from unsigned long to u64

2026-03-06 14:31:28 +01:00

task_nommu.c

fs/proc/task_mmu: factor out proc_maps_private fields used by PROCMAP_QUERY

2025-09-13 16:54:48 -07:00

thread_self.c

fs/proc: Don't lock root inode when creating "self" and "thread-self"

2026-03-06 10:24:11 +01:00

uptime.c

…

util.c

…

version.c

…

vmcore.c

mm: rename my_zero_pfn() to zero_pfn()

2026-04-05 13:53:01 -07:00