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tpm2: fix tpm2-abrmd D-Bus communication under enforcing mode #1170

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Merged
pebenito merged 1 commit into from
Jul 8, 2026
Merged

tpm2: fix tpm2-abrmd D-Bus communication under enforcing mode #1170

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5 changes: 5 additions & 0 deletions policy/modules/roles/sysadm.te
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Original file line number Diff line number Diff line change
Expand Up @@ -1147,6 +1147,11 @@ optional_policy(`
tor_admin(sysadm_t, sysadm_r)
')

optional_policy(`
tpm2_run(sysadm_t, sysadm_r)
tpm2_dbus_chat_abrmd(sysadm_t)
')

optional_policy(`
transproxy_admin(sysadm_t, sysadm_r)
')
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1 change: 1 addition & 0 deletions policy/modules/services/dbus.te
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Expand Up @@ -305,6 +305,7 @@ optional_policy(`

optional_policy(`
tpm2_rw_abrmd_pipes(system_dbusd_t)
tpm2_rw_abrmd_stream_sockets(system_dbusd_t)
')

optional_policy(`
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20 changes: 20 additions & 0 deletions policy/modules/services/tpm2.if
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Expand Up @@ -224,3 +224,23 @@ interface(`tpm2_rw_abrmd_pipes',`
allow $1 tpm2_abrmd_t:fd use;
allow $1 tpm2_abrmd_t:fifo_file rw_fifo_file_perms;
')

########################################
## <summary>
## Read and write tpm2-abrmd unix stream sockets.
## This is used by the D-Bus system daemon to communicate
## over the socketpair fds passed by tpm2-abrmd to clients.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`tpm2_rw_abrmd_stream_sockets',`
gen_require(`
type tpm2_abrmd_t;
')
allow $1 tpm2_abrmd_t:fd use;
allow $1 tpm2_abrmd_t:unix_stream_socket rw_socket_perms;
')
5 changes: 5 additions & 0 deletions policy/modules/services/tpm2.te
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Expand Up @@ -33,8 +33,13 @@ logging_send_syslog_msg(tpm2_abrmd_t)

dev_read_urand(tpm2_abrmd_t)

files_read_etc_files(tpm2_abrmd_t)

miscfiles_read_localization(tpm2_abrmd_t)

optional_policy(`
dbus_system_domain(tpm2_abrmd_t, tpm2_abrmd_exec_t)
init_dbus_chat(tpm2_abrmd_t)
')


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4 changes: 4 additions & 0 deletions policy/modules/system/unconfined.te
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Expand Up @@ -274,6 +274,10 @@ optional_policy(`
allow unconfined_execmem_t self:process { execmem execstack };
unconfined_domain_noaudit(unconfined_execmem_t)

optional_policy(`
tpm2_dbus_chat_abrmd(unconfined_t)
')

optional_policy(`
unconfined_dbus_chat(unconfined_execmem_t)
')
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khalidfaisal17 marked this conversation as resolved.
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