From 355731c1c456907fc7097257e50e4c0377f17953 Mon Sep 17 00:00:00 2001 From: Zdenek Pytela Date: Wed, 7 Sep 2022 09:41:19 +0200 Subject: [PATCH] Allow init remount all file_type filesystems Addresses the following AVC denial: type=PROCTITLE msg=audit(1650874039.465:8427): proctitle="(coredump)" type=PATH msg=audit(1650874039.465:8427): item=0 name="/proc/self/fd/4" inode=256 dev=00:32 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:swapfile_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0 type=SYSCALL msg=audit(1650874039.465:8427): arch=c000003e syscall=165 success=yes exit=0 a0=0 a1=7ffeea790a00 a2=0 a3=1021 items=1 ppid=1 pid=208737 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="(coredump)" exe="/usr/lib/systemd/systemd" subj=system_u:system_r:init_t:s0 key=(null) type=AVC msg=audit(1650874039.465:8427): avc: denied { remount } for pid=208737 comm="(coredump)" scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:swapfile_t:s0 tclass=filesystem permissive=1 Resolves: rhbz#2125693 Signed-off-by: lujie42 --- policy/modules/kernel/files.if | 18 ++++++++++++++++++ policy/modules/system/init.te | 1 + 2 files changed, 19 insertions(+) diff --git a/policy/modules/kernel/files.if b/policy/modules/kernel/files.if index 2bb2908df..165eb4a12 100644 --- a/policy/modules/kernel/files.if +++ b/policy/modules/kernel/files.if @@ -1947,6 +1947,24 @@ interface(`files_unmount_all_file_type_fs',` allow $1 file_type:filesystem unmount; ') +######################################## +## +## Remount all filesystems with the type of a file. +## +## +## +## Domain allowed access. +## +## +# +interface(`files_remount_all_file_type_fs',` + gen_require(` + attribute file_type; + ') + + allow $1 file_type:filesystem remount; +') + ######################################## ## ## Read all non-authentication related diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te index f369aa50e..c81f0d0be 100644 --- a/policy/modules/system/init.te +++ b/policy/modules/system/init.te @@ -627,6 +627,7 @@ dev_rw_wireless(init_t) files_search_all(init_t) files_mounton_all_mountpoints(init_t) files_unmount_all_file_type_fs(init_t) +files_remount_all_file_type_fs(init_t) files_mounton_kernel_symbol_table(init_t) files_manage_all_pid_dirs(init_t) files_write_all_pid_sockets(init_t) -- 2.27.0