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linux/fs/proc
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Danilo Krummrich f3793cd7ef fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table 
commit a0b0d1c345 upstream.

proc_sys_link_fill_cache() does not take currently unregistering sysctl
tables into account, which might result into a page fault in
sysctl_follow_link() - add a check to fix it.

This bug has been present since v3.4.

Link: http://lkml.kernel.org/r/20180228013506.4915-1-danilokrummrich@dk-develop.de
Fixes: 0e47c99d7f ("sysctl: Replace root_list with links between sysctl_table_sets")
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2018-10-21 08:45:21 +01:00
..
array.c proc: Use underscores for SSBD in 'status' 2018-10-03 04:09:44 +01:00
base.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2017-09-15 18:30:17 +01:00
cmdline.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
consoles.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
cpuinfo.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
devices.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
fd.c proc: actually make proc_fd_permission() thread-friendly 2015-12-13 17:49:12 +00:00
fd.h proc: Move proc_fd() to fs/proc/fd.h 2013-05-01 17:29:39 -04:00
generic.c fs: Give dentry to inode_change_ok() instead of inode 2017-02-23 03:53:52 +00:00
inode.c proc: Allow creating permanently empty directories that serve as mount points 2015-07-15 10:01:06 +01:00
internal.h proc: Allow creating permanently empty directories that serve as mount points 2015-07-15 10:01:06 +01:00
interrupts.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
Kconfig kcore: add Kconfig help text 2013-11-13 12:09:33 +09:00
kcore.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
kmsg.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
loadavg.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
Makefile of: remove /proc/device-tree 2014-03-11 20:48:32 +00:00
meminfo.c fs/proc/meminfo: meminfo_proc_show(): fix typo in comment 2014-04-07 16:36:04 -07:00
namespaces.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2017-09-15 18:30:17 +01:00
nommu.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
page.c mm: close PageTail race 2014-03-04 07:55:47 -08:00
proc_net.c [readdir] convert procfs 2013-06-29 12:56:32 +04:00
proc_sysctl.c fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table 2018-10-21 08:45:21 +01:00
proc_tty.c proc: use seq_puts()/seq_putc() where possible 2011-01-13 08:03:16 -08:00
root.c vfs: Commit to never having exectuables on proc and sysfs. 2017-04-04 22:21:56 +01:00
self.c new helper: readlink_copy() 2014-04-01 23:19:15 -04:00
softirqs.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
stat.c genirq: Prevent proc race against freeing of irq descriptors 2015-01-15 10:44:31 +00:00
task_mmu.c proc: drop handling non-linear mappings 2018-10-03 04:09:51 +01:00
task_nommu.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2017-09-15 18:30:17 +01:00
uptime.c cputime: Default implementation of nsecs -> cputime conversion 2014-03-13 15:56:43 +01:00
version.c fs/proc: don't use module_init for non-modular core code 2014-01-23 16:37:02 -08:00
vmcore.c fs/proc/vmcore.c: remove NULL assignment to static 2014-06-06 16:08:12 -07:00