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From 07fb786e0d17bd395333d276ebbaad42c72ee358 Mon Sep 17 00:00:00 2001
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Message-Id: <07fb786e0d17bd395333d276ebbaad42c72ee358@dist-git>
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From: David Michael <david@bigbadwolfsecurity.com>
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Date: Tue, 28 Jun 2022 08:33:41 -0400
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Subject: [PATCH] security_selinux.c: Relabel existing mode="bind" UNIX sockets
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This supports sockets created by libvirt and passed by FD using the
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same method as in security_dac.c.
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Signed-off-by: David Michael <david@bigbadwolfsecurity.com>
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 9f13f54a6348b54170f7de3595039c99b9da72c7)
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https://bugzilla.redhat.com/show_bug.cgi?id=2101575
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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---
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src/security/security_selinux.c | 9 +++++++--
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tests/securityselinuxlabeldata/chardev.txt | 2 +-
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2 files changed, 8 insertions(+), 3 deletions(-)
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diff --git a/src/security/security_selinux.c b/src/security/security_selinux.c
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index 0952431064..b90e819fd2 100644
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--- a/src/security/security_selinux.c
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+++ b/src/security/security_selinux.c
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@@ -2545,7 +2545,12 @@ virSecuritySELinuxSetChardevLabel(virSecurityManager *mgr,
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break;
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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- if (!dev_source->data.nix.listen) {
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+ if (!dev_source->data.nix.listen ||
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+ (dev_source->data.nix.path &&
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+ virFileExists(dev_source->data.nix.path))) {
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+ /* Also label mode='bind' sockets if they exist,
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+ * e.g. because they were created by libvirt
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+ * and passed via FD */
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if (virSecuritySELinuxSetFilecon(mgr,
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dev_source->data.nix.path,
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imagelabel,
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@@ -2622,7 +2627,7 @@ virSecuritySELinuxRestoreChardevLabel(virSecurityManager *mgr,
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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if (!dev_source->data.nix.listen) {
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if (virSecuritySELinuxRestoreFileLabel(mgr,
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- dev_source->data.file.path,
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+ dev_source->data.nix.path,
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true) < 0)
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goto done;
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}
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diff --git a/tests/securityselinuxlabeldata/chardev.txt b/tests/securityselinuxlabeldata/chardev.txt
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index 3f4b6302b9..bdb367f7a5 100644
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--- a/tests/securityselinuxlabeldata/chardev.txt
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+++ b/tests/securityselinuxlabeldata/chardev.txt
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@@ -2,6 +2,6 @@
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/plain.dev;system_u:object_r:svirt_image_t:s0:c41,c264
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/plain.fifo;system_u:object_r:svirt_image_t:s0:c41,c264
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/nolabel.sock;
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-/plain.sock;
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+/plain.sock;system_u:object_r:svirt_image_t:s0:c41,c264
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/yeslabel.sock;system_u:object_r:svirt_image_t:s0:c41,c264
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/altlabel.sock;system_u:object_r:svirt_image_custom_t:s0:c41,c264
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--
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2.35.1
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