64 lines
2.5 KiB
Diff
64 lines
2.5 KiB
Diff
From 355731c1c456907fc7097257e50e4c0377f17953 Mon Sep 17 00:00:00 2001
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From: Zdenek Pytela <zpytela@redhat.com>
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Date: Wed, 7 Sep 2022 09:41:19 +0200
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Subject: [PATCH] Allow init remount all file_type filesystems
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Addresses the following AVC denial:
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type=PROCTITLE msg=audit(1650874039.465:8427): proctitle="(coredump)"
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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
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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)
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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
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Resolves: rhbz#2125693
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Signed-off-by: lujie42 <lujie54@huawei.com>
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---
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policy/modules/kernel/files.if | 18 ++++++++++++++++++
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policy/modules/system/init.te | 1 +
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2 files changed, 19 insertions(+)
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diff --git a/policy/modules/kernel/files.if b/policy/modules/kernel/files.if
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index 2bb2908df..165eb4a12 100644
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--- a/policy/modules/kernel/files.if
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+++ b/policy/modules/kernel/files.if
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@@ -1947,6 +1947,24 @@ interface(`files_unmount_all_file_type_fs',`
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allow $1 file_type:filesystem unmount;
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')
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+########################################
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+## <summary>
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+## Remount all filesystems with the type of a file.
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+## </summary>
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+## <param name="domain">
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+## <summary>
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+## Domain allowed access.
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+## </summary>
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+## </param>
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+#
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+interface(`files_remount_all_file_type_fs',`
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+ gen_require(`
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+ attribute file_type;
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+ ')
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+
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+ allow $1 file_type:filesystem remount;
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+')
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+
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########################################
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## <summary>
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## Read all non-authentication related
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diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
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index f369aa50e..c81f0d0be 100644
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--- a/policy/modules/system/init.te
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+++ b/policy/modules/system/init.te
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@@ -627,6 +627,7 @@ dev_rw_wireless(init_t)
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files_search_all(init_t)
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files_mounton_all_mountpoints(init_t)
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files_unmount_all_file_type_fs(init_t)
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+files_remount_all_file_type_fs(init_t)
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files_mounton_kernel_symbol_table(init_t)
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files_manage_all_pid_dirs(init_t)
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files_write_all_pid_sockets(init_t)
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--
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2.27.0
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