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From 07e2bf732f54f936cccc4e0c7b468d77f97e911a Mon Sep 17 00:00:00 2001
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From: Florence Blanc-Renaud <flo@redhat.com>
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Date: Mon, 30 Aug 2021 18:40:24 +0200
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Subject: [PATCH] selinux policy: allow custodia to access /proc/cpuinfo
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On aarch64, custodia creates AVC when accessing /proc/cpuinfo.
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According to gcrypt manual
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(https://gnupg.org/documentation/manuals/gcrypt/Configuration.html),
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/proc/cpuinfo is used on ARM architecture to read the hardware
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capabilities of the CPU. This explains why the issue happens only
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on aarch64.
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audit2allow suggests to add the following:
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allow ipa_custodia_t proc_t:file { getattr open read };
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but this policy would be too broad. Instead, the patch is using
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the interface kernel_read_system_state.
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Fixes: https://pagure.io/freeipa/issue/8972
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Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
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Reviewed-By: Christian Heimes <cheimes@redhat.com>
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---
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selinux/ipa.te | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/selinux/ipa.te b/selinux/ipa.te
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index 68e109419..7492fca04 100644
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--- a/selinux/ipa.te
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+++ b/selinux/ipa.te
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@@ -364,6 +364,7 @@ files_tmp_filetrans(ipa_custodia_t, ipa_custodia_tmp_t, { dir file })
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kernel_dgram_send(ipa_custodia_t)
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kernel_read_network_state(ipa_custodia_t)
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+kernel_read_system_state(ipa_custodia_t)
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auth_read_passwd(ipa_custodia_t)
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--
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2.31.1
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