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dfa3cf0bc018ff15e02ce19906be00a287ff2395
linux/fs/proc
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wangzijie ff7ec8dc1b proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al 
Check pde->proc_ops->proc_lseek directly may cause UAF in rmmod scenario. 
It's a gap in proc_reg_open() after commit 654b33ada4ab("proc: fix UAF in
proc_get_inode()").  Followed by AI Viro's suggestion, fix it in same
manner.

Link: https://lkml.kernel.org/r/20250607021353.1127963-1-wangzijie1@honor.com
Fixes: 3f61631d47 ("take care to handle NULL ->proc_lseek()")
Signed-off-by: wangzijie <wangzijie1@honor.com>
Reviewed-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-09 22:42:01 -07:00
..
array.c
fs/proc: do_task_stat: Fix ESP not readable during coredump
2025-01-04 10:12:18 +01:00
base.c
Merge tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-05-31 19:12:53 -07:00
bootconfig.c
fs/proc: Skip bootloader comment if no embedded kernel parameters
2024-04-09 23:36:18 +09:00
cmdline.c
proc: mark /proc/cmdline as permanent
2023-02-02 22:50:02 -08:00
consoles.c
proc: Add nbcon support for /proc/consoles
2024-09-04 15:56:33 +02:00
cpuinfo.c
x86/aperfmperf: Replace aperfmperf_get_khz()
2022-04-27 20:22:19 +02:00
devices.c
proc: mark more files as permanent
2022-10-03 14:21:45 -07:00
fd.c
Pass parent directory inode and expected name to ->d_revalidate()
2025-01-27 19:25:23 -05:00
fd.h
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
generic.c
proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
2025-07-09 22:42:01 -07:00
inode.c
proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
2025-07-09 22:42:01 -07:00
internal.h
proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
2025-07-09 22:42:01 -07:00
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
crash: Use note name macros
2025-02-10 16:56:58 -08:00
kmsg.c
Merge tag 'printk-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
2022-10-10 11:24:19 -07:00
loadavg.c
proc: mark more files as permanent
2022-10-03 14:21:45 -07:00
Makefile
kbuild: make -Woverride-init warnings more consistent
2024-03-31 11:32:26 +09:00
meminfo.c
mm: remove NR_BOUNCE zone stat
2025-05-05 13:22:39 -06:00
namespaces.c
vfs: support caching symlink lengths in inodes
2024-12-22 11:29:50 +01:00
nommu.c
fs: create helper file_user_path() for user displayed mapped file path
2023-10-19 11:03:15 +02:00
page.c
fs/proc/page: refactor to reduce code duplication
2025-05-11 17:48:20 -07:00
proc_net.c
fs: Add kernel-doc comments to proc_create_net_data_write()
2024-03-26 09:01:18 +01:00
proc_sysctl.c
fix proc_sys_compare() handling of in-lookup dentries
2025-07-03 20:59:09 -04:00
proc_tty.c
proc: delete unused <linux/uaccess.h> includes
2022-07-17 17:31:39 -07:00
root.c
procfs: make freeing proc_fs_info rcu-delayed
2024-02-25 02:10:32 -05:00
self.c
proc: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
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
fs/proc/task_mmu: fix PAGE_IS_PFNZERO detection for the huge zero folio
2025-06-25 15:55:03 -07:00
task_nommu.c
proc: fix the issue of proc_mem_open returning NULL
2025-05-11 17:54:05 -07:00
thread_self.c
proc: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
uptime.c
proc: mark more files as permanent
2022-10-03 14:21:45 -07:00
util.c
fs/proc/util.c: include fs/proc/internal.h for name_to_int()
2019-01-04 13:13:45 -08:00
version.c
proc: mark more files as permanent
2022-10-03 14:21:45 -07:00
vmcore.c
procfs: fix a locking bug in a vmcore_add_device_dump() error path
2025-02-17 22:40:00 -08:00