From 400c278dc20c89d2b85a351c9a6567d3fb348a01 Mon Sep 17 00:00:00 2001 From: Zdenek Pytela Date: Wed, 10 Aug 2022 17:26:03 +0200 Subject: [PATCH] Allow xdm read the kernel key ring Reference: https://gitbub.com/fedora-selinux/selinux-policy/commit/400c278dc20c89d2b85a351c9a6567d3fb348a01 Conflict: NA The kernel_read_key() interface was added. Addresses the following AVC denial: type=PROCTITLE msg=audit(28.7.2022 13:38:34.889:250) : proctitle=gdm-session-worker [pam/gdm-autologin] type=SYSCALL msg=audit(28.7.2022 13:38:34.889:250) : arch=x86_64 syscall=keyctl success=yes exit=10 a0=0xb a1=0x1276ecec a2=0x0 a3=0x0 items=0 ppid=1417 pid=1455 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=gdm-session-wor exe=/usr/libexec/gdm-session-worker subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(28.7.2022 13:38:34.889:250) : avc: denied { read } for pid=1455 comm=gdm-session-wor scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:kernel_t:s0 tclass=key permissive=0 Resolves: rhbz#2111834 Signed-off-by: lujie54 --- policy/modules/kernel/kernel.if | 18 ++++++++++++++++++ policy/modules/services/xserver.te | 1 + 2 files changed, 19 insertions(+) diff --git a/policy/modules/kernel/kernel.if b/policy/modules/kernel/kernel.if index 6828750..8ffd498 100644 --- a/policy/modules/kernel/kernel.if +++ b/policy/modules/kernel/kernel.if @@ -510,6 +510,24 @@ interface(`kernel_rw_key',` ######################################## ## +## Allow read the kernel key ring. +## +## +## +## Domain allowed access. +## +## +# +interface(`kernel_read_key',` + gen_require(` + type kernel_t; + ') + + allow $1 kernel_t:key read; +') + +######################################## +## ## Allow view the kernel key ring. ## ## diff --git a/policy/modules/services/xserver.te b/policy/modules/services/xserver.te index cc215b8..6638ed9 100644 --- a/policy/modules/services/xserver.te +++ b/policy/modules/services/xserver.te @@ -566,6 +566,7 @@ kernel_read_net_sysctls(xdm_t) kernel_read_network_state(xdm_t) kernel_request_load_module(xdm_t) kernel_stream_connect(xdm_t) +kernel_read_key(xdm_t) kernel_view_key(xdm_t) corecmd_exec_shell(xdm_t) -- 1.8.3.1