2013-01-14 17:53:52 +00:00
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References: CVE-2012-5634 XSA-33 bnc#794316
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2013-02-22 21:42:01 +00:00
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# HG changeset patch
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# User Jan Beulich <jbeulich@suse.com>
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# Date 1357748006 -3600
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# Node ID 19fd1237ff0dfa3d97a896d6ed6fbbd33f816a9f
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# Parent 56b0d5476c11bfd09986080dfa97923586ef474f
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2013-01-14 17:53:52 +00:00
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VT-d: fix interrupt remapping source validation for devices behind legacy bridges
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Using SVT_VERIFY_BUS here doesn't make sense; native Linux also
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uses SVT_VERIFY_SID_SQ here instead.
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This is XSA-33 / CVE-2012-5634.
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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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--- a/xen/drivers/passthrough/vtd/intremap.c
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+++ b/xen/drivers/passthrough/vtd/intremap.c
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@@ -469,7 +469,7 @@ static void set_msi_source_id(struct pci
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set_ire_sid(ire, SVT_VERIFY_BUS, SQ_ALL_16,
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(bus << 8) | pdev->bus);
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else if ( pdev_type(seg, bus, devfn) == DEV_TYPE_LEGACY_PCI_BRIDGE )
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- set_ire_sid(ire, SVT_VERIFY_BUS, SQ_ALL_16,
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+ set_ire_sid(ire, SVT_VERIFY_SID_SQ, SQ_ALL_16,
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PCI_BDF2(bus, devfn));
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}
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break;
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