Kalesh Singh 1927e498ae procfs: prevent unprivileged processes accessing fdinfo dir ... The file permissions on the fdinfo dir from were changed from S_IRUSR|S_IXUSR to S_IRUGO|S_IXUGO, and a PTRACE_MODE_READ check was added for opening the fdinfo files [1]. However, the ptrace permission check was not added to the directory, allowing anyone to get the open FD numbers by reading the fdinfo directory. Add the missing ptrace permission check for opening the fdinfo directory. [1] https://lkml.kernel.org/r/20210308170651.919148-1-kaleshsingh@google.com Link: https://lkml.kernel.org/r/20210713162008.1056986-1-kaleshsingh@google.com Fixes: 7bc3fa0172 ("procfs: allow reading fdinfo with PTRACE_MODE_READ") Signed-off-by: Kalesh Singh <kaleshsingh@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Hridya Valsaraju <hridya@google.com> Cc: Jann Horn <jannh@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-05-09 17:34:28 -07:00
..
array.c	tracehook: Remove tracehook.h	2022-03-10 16:51:51 -06:00
base.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
bootconfig.c	proc: bootconfig: Add null pointer check	2022-04-02 08:40:09 -04:00
cmdline.c
consoles.c
cpuinfo.c
devices.c
fd.c	procfs: prevent unprivileged processes accessing fdinfo dir	2022-05-09 17:34:28 -07:00
fd.h
generic.c	fs: proc: store PDE()->data into inode->i_private	2022-01-22 08:33:37 +02:00
inode.c	fs: allocate inode by using alloc_inode_sb()	2022-03-22 15:57:03 -07:00
internal.h	fs: proc: store PDE()->data into inode->i_private	2022-01-22 08:33:37 +02:00
interrupts.c
Kconfig
kcore.c
kmsg.c
loadavg.c
Makefile
meminfo.c
namespaces.c
nommu.c
page.c	mm: don't include <linux/memremap.h> in <linux/mm.h>	2022-03-03 12:47:33 -05:00
proc_net.c	proc: remove PDE_DATA() completely	2022-01-22 08:33:37 +02:00
proc_sysctl.c	kernel/sysctl.c: rename sysctl_init() to sysctl_init_bases()	2022-01-22 08:33:36 +02:00
proc_tty.c
root.c
self.c
softirqs.c
stat.c	fs/proc/uptime.c: Fix idle time reporting in /proc/uptime	2021-10-05 15:51:35 +02:00
task_mmu.c	proc: fix documentation and description of pagemap	2022-03-05 11:08:33 -08:00
task_nommu.c
thread_self.c
uptime.c	fs/proc/uptime.c: Fix idle time reporting in /proc/uptime	2021-10-05 15:51:35 +02:00
util.c
version.c
vmcore.c	proc/vmcore: fix vmcore_alloc_buf() kernel-doc comment	2022-03-23 19:00:33 -07:00