67 lines
2.4 KiB
Diff
67 lines
2.4 KiB
Diff
From 400c278dc20c89d2b85a351c9a6567d3fb348a01 Mon Sep 17 00:00:00 2001
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From: Zdenek Pytela <zpytela@redhat.com>
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Date: Wed, 10 Aug 2022 17:26:03 +0200
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Subject: [PATCH] Allow xdm read the kernel key ring
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Reference: https://gitbub.com/fedora-selinux/selinux-policy/commit/400c278dc20c89d2b85a351c9a6567d3fb348a01
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Conflict: NA
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The kernel_read_key() interface was added.
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Addresses the following AVC denial:
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type=PROCTITLE msg=audit(28.7.2022 13:38:34.889:250) : proctitle=gdm-session-worker [pam/gdm-autologin]
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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)
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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
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Resolves: rhbz#2111834
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Signed-off-by: lujie54 <lujie54@huawei.com>
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---
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policy/modules/kernel/kernel.if | 18 ++++++++++++++++++
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policy/modules/services/xserver.te | 1 +
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2 files changed, 19 insertions(+)
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diff --git a/policy/modules/kernel/kernel.if b/policy/modules/kernel/kernel.if
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index 6828750..8ffd498 100644
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--- a/policy/modules/kernel/kernel.if
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+++ b/policy/modules/kernel/kernel.if
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@@ -510,6 +510,24 @@ interface(`kernel_rw_key',`
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########################################
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## <summary>
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+## Allow read the kernel key ring.
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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(`kernel_read_key',`
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+ gen_require(`
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+ type kernel_t;
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+ ')
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+
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+ allow $1 kernel_t:key read;
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+')
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+
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+########################################
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+## <summary>
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## Allow view the kernel key ring.
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## </summary>
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## <param name="domain">
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diff --git a/policy/modules/services/xserver.te b/policy/modules/services/xserver.te
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index cc215b8..6638ed9 100644
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--- a/policy/modules/services/xserver.te
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+++ b/policy/modules/services/xserver.te
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@@ -566,6 +566,7 @@ kernel_read_net_sysctls(xdm_t)
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kernel_read_network_state(xdm_t)
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kernel_request_load_module(xdm_t)
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kernel_stream_connect(xdm_t)
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+kernel_read_key(xdm_t)
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kernel_view_key(xdm_t)
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corecmd_exec_shell(xdm_t)
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--
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1.8.3.1
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