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[174.29.216.122]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4007639daf5sm341955b6e.40.2025.04.09.16.27.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Apr 2025 16:27:43 -0700 (PDT) Message-ID: <1f0dc3e3-d7b6-49ff-bb07-17c22db0c515@gmail.com> Date: Wed, 9 Apr 2025 17:27:42 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: joe.macdonald@siemens.com, yi.zhao@windriver.com, yocto-patches@lists.yoctoproject.org From: Clayton Casciato Subject: [meta-selinux][PATCH] refpolicy: locallogin - allow sulogin_t user_tty_device_t rw List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 09 Apr 2025 23:27:46 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/yocto-patches/message/1344 Signed-off-by: Clayton Casciato --- ...ystem-locallogin-allow-sulogin_t-use.patch | 79 +++++++++++++++++++ .../refpolicy/refpolicy_common.inc | 1 + 2 files changed, 80 insertions(+) create mode 100644 recipes-security/refpolicy/refpolicy/0058-policy-modules-system-locallogin-allow-sulogin_t-use.patch diff --git a/recipes-security/refpolicy/refpolicy/0058-policy-modules-system-locallogin-allow-sulogin_t-use.patch b/recipes-security/refpolicy/refpolicy/0058-policy-modules-system-locallogin-allow-sulogin_t-use.patch new file mode 100644 index 0000000..fb58cf2 --- /dev/null +++ b/recipes-security/refpolicy/refpolicy/0058-policy-modules-system-locallogin-allow-sulogin_t-use.patch @@ -0,0 +1,79 @@ +From ea62c7fbabb2eeccf309c79fb03435194bcc3053 Mon Sep 17 00:00:00 2001 +From: Clayton Casciato +Date: Tue, 1 Apr 2025 12:18:56 -0600 +Subject: [PATCH] locallogin: allow sulogin_t user_tty_device_t rw + +type=PROCTITLE proctitle=/usr/sbin/sulogin + +type=SYSCALL arch=armeb syscall=openat per=PER_LINUX success=yes exit=3 +a0=AT_FDCWD a1=0x4e77d0 a2=O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW a3=0x0 +items=0 ppid=432 pid=433 auid=unset uid=root gid=root euid=root +suid=root fsuid=root egid=root sgid=root fsgid=root tty=ttyAMA0 +ses=unset comm=sulogin exe=/usr/sbin/sulogin.util-linux +subj=system_u:system_r:sulogin_t:s0 key=(null) + +type=AVC avc: denied { open } for pid=433 comm=sulogin +path=/dev/ttyAMA0 dev="devtmpfs" ino=2 +scontext=system_u:system_r:sulogin_t:s0 +tcontext=unconfined_u:object_r:user_tty_device_t:s0 tclass=chr_file + +type=AVC avc: denied { read write } for pid=433 comm=sulogin +name=ttyAMA0 dev="devtmpfs" ino=2 +scontext=system_u:system_r:sulogin_t:s0 +tcontext=unconfined_u:object_r:user_tty_device_t:s0 tclass=chr_file +---- +type=PROCTITLE proctitle=/usr/sbin/sulogin + +type=SYSCALL arch=armeb syscall=ioctl per=PER_LINUX success=yes exit=0 +a0=0x3 a1=0x5457 a2=0xbe8cba90 a3=0xbe8cba40 items=0 ppid=432 pid=433 +auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root +sgid=root fsgid=root tty=ttyAMA0 ses=unset comm=sulogin +exe=/usr/sbin/sulogin.util-linux subj=system_u:system_r:sulogin_t:s0 +key=(null) + +type=AVC avc: denied { ioctl } for pid=433 comm=sulogin +path=/dev/ttyAMA0 dev="devtmpfs" ino=2 ioctlcmd=0x5457 +scontext=system_u:system_r:sulogin_t:s0 +tcontext=unconfined_u:object_r:user_tty_device_t:s0 tclass=chr_file +---- +type=PROCTITLE proctitle=/usr/sbin/sulogin + +type=SYSCALL arch=armeb syscall=statx per=PER_LINUX success=yes exit=0 +a0=0x0 a1=0xb6f046ac a2=0x1800 a3=0x7ff items=0 ppid=432 pid=433 +auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root +sgid=root fsgid=root tty=ttyAMA0 ses=unset comm=sulogin +exe=/usr/sbin/sulogin.util-linux subj=system_u:system_r:sulogin_t:s0 +key=(null) + +type=AVC avc: denied { getattr } for pid=433 comm=sulogin +path=/dev/ttyAMA0 dev="devtmpfs" ino=2 +scontext=system_u:system_r:sulogin_t:s0 +tcontext=unconfined_u:object_r:user_tty_device_t:s0 tclass=chr_file + +-- + +Fedora: +https://github.com/fedora-selinux/selinux-policy/blob/v41.35/policy/modules/system/locallogin.te#L266 + +Signed-off-by: Clayton Casciato + +Upstream-Status: Backport [https://github.com/SELinuxProject/refpolicy/commit/2240e1a89ea61096b64a172c45fa9db73553ac6d] + +Signed-off-by: Clayton Casciato +--- + policy/modules/system/locallogin.te | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/policy/modules/system/locallogin.te b/policy/modules/system/locallogin.te +index 547fc1ded..59bcc78c8 100644 +--- a/policy/modules/system/locallogin.te ++++ b/policy/modules/system/locallogin.te +@@ -278,7 +278,7 @@ seutil_read_default_contexts(sulogin_t) + userdom_use_unpriv_users_fds(sulogin_t) + + userdom_search_user_home_dirs(sulogin_t) +-userdom_use_user_ptys(sulogin_t) ++userdom_use_user_terminals(sulogin_t) + + sysadm_shell_domtrans(sulogin_t) + diff --git a/recipes-security/refpolicy/refpolicy_common.inc b/recipes-security/refpolicy/refpolicy_common.inc index 0661e6c..17937f7 100644 --- a/recipes-security/refpolicy/refpolicy_common.inc +++ b/recipes-security/refpolicy/refpolicy_common.inc @@ -73,6 +73,7 @@ SRC_URI += " \ file://0055-policy-modules-system-setrans-allow-setrans_t-use-fd.patch \ file://0056-policy-modules-system-systemd-make-_systemd_t-MLS-tr.patch \ file://0057-policy-modules-system-logging-make-syslogd_runtime_t.patch \ + file://0058-policy-modules-system-locallogin-allow-sulogin_t-use.patch \ " S = "${WORKDIR}/refpolicy"