Accepting request 406664 from home:gary_lin:branches:Virtualization
- Fix OVMF iPXE network menu (bsc#986033, boo#987488) ipxe-efi-fix-garbage-bytes-in-device-path.patch ipxe-efi-fix-uninitialised-data-in-HII.patch OBS-URL: https://build.opensuse.org/request/show/406664 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=302
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Andreas Färber
Git OBS Bridge
parent
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40
ipxe-efi-fix-garbage-bytes-in-device-path.patch
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ipxe-efi-fix-garbage-bytes-in-device-path.patch
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@ -0,0 +1,40 @@
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From 632e57f0f36d9b48f574db273a19e26bf592fc99 Mon Sep 17 00:00:00 2001
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From: Michael Brown <mcb30@ipxe.org>
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Date: Wed, 22 Jun 2016 09:07:20 +0100
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Subject: [PATCH] [efi] Do not copy garbage bytes into SNP device path MAC
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address
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The SNP device path includes the network device's MAC address within
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the MAC_ADDR_DEVICE_PATH.MacAddress field. We check that the
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link-layer address will fit within this field, and then perform the
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copy using the length of the destination buffer.
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At 32 bytes, the MacAddress field is actually larger than the current
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maximum iPXE link-layer address. The copy therefore overflows the
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source buffer, resulting in trailing garbage bytes being appended to
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the device path's MacAddress. This is invisible in debug messages,
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since the DevicePathToText protocol will render only the length
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implied by the interface type.
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Fix by copying only the actual length of the link-layer address (which
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we have already verified will not overflow the destination buffer).
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Debugged-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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---
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src/interface/efi/efi_snp.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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Index: ipxe/src/interface/efi/efi_snp.c
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===================================================================
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--- ipxe.orig/src/interface/efi/efi_snp.c
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+++ ipxe/src/interface/efi/efi_snp.c
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@@ -1049,7 +1049,7 @@ static int efi_snp_probe ( struct net_de
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macpath->Header.SubType = MSG_MAC_ADDR_DP;
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macpath->Header.Length[0] = sizeof ( *macpath );
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memcpy ( &macpath->MacAddress, netdev->ll_addr,
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- sizeof ( macpath->MacAddress ) );
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+ netdev->ll_protocol->ll_addr_len );
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macpath->IfType = ntohs ( netdev->ll_protocol->ll_proto );
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memset ( path_end, 0, sizeof ( *path_end ) );
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path_end->Type = END_DEVICE_PATH_TYPE;
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35
ipxe-efi-fix-uninitialised-data-in-HII.patch
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ipxe-efi-fix-uninitialised-data-in-HII.patch
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@ -0,0 +1,35 @@
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From c9f6a8605955926017cdbe2fa99a4b72fd0985a2 Mon Sep 17 00:00:00 2001
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From: Michael Brown <mcb30@ipxe.org>
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Date: Wed, 29 Jun 2016 15:13:35 +0100
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Subject: [PATCH] [efi] Fix uninitialised data in HII IFR structures
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The HII IFR structures are allocated via realloc() rather than
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zalloc(), and so are not automatically zeroed. This results in the
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presence of uninitialised and invalid data, causing crashes elsewhere
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in the UEFI firmware.
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Fix by explicitly zeroing the newly allocated portion of any IFR
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structure in efi_ifr_op().
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Debugged-by: Laszlo Ersek <lersek@redhat.com>
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Debugged-by: Gary Lin <glin@suse.com>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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---
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src/interface/efi/efi_hii.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/src/interface/efi/efi_hii.c b/src/interface/efi/efi_hii.c
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index 0ea970e..506fc88 100644
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--- a/src/interface/efi/efi_hii.c
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+++ b/src/interface/efi/efi_hii.c
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@@ -117,6 +117,7 @@ static void * efi_ifr_op ( struct efi_ifr_builder *ifr, unsigned int opcode,
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ifr->ops_len = new_ops_len;
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/* Fill in opcode header */
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+ memset ( op, 0, len );
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op->OpCode = opcode;
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op->Length = len;
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--
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2.8.4
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@ -1,3 +1,10 @@
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-------------------------------------------------------------------
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Mon Jul 4 06:20:16 UTC 2016 - glin@suse.com
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- Fix OVMF iPXE network menu (bsc#986033, boo#987488)
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ipxe-efi-fix-garbage-bytes-in-device-path.patch
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ipxe-efi-fix-uninitialised-data-in-HII.patch
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-------------------------------------------------------------------
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Fri Jun 10 20:25:21 UTC 2016 - brogers@suse.com
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@ -143,6 +143,8 @@ Patch1103: ipxe-skge-Fix-building-with-GCC-6.patch
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Patch1104: ipxe-ath-Fix-building-with-GCC-6.patch
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Patch1105: ipxe-legacy-Fix-building-with-GCC-6.patch
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Patch1106: ipxe-util-v5.24-perl-errors-on-redeclare.patch
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Patch1107: ipxe-efi-fix-garbage-bytes-in-device-path.patch
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Patch1108: ipxe-efi-fix-uninitialised-data-in-HII.patch
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%endif
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# this is to make lint happy
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@ -749,6 +751,8 @@ pushd roms/ipxe
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%patch1104 -p1
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%patch1105 -p1
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%patch1106 -p1
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%patch1107 -p1
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%patch1108 -p1
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popd
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# as a safeguard, delete the firmware files that we intend to build
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@ -1,3 +1,10 @@
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-------------------------------------------------------------------
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Mon Jul 4 06:20:16 UTC 2016 - glin@suse.com
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- Fix OVMF iPXE network menu (bsc#986033, boo#987488)
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ipxe-efi-fix-garbage-bytes-in-device-path.patch
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ipxe-efi-fix-uninitialised-data-in-HII.patch
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-------------------------------------------------------------------
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Fri Jun 10 20:25:21 UTC 2016 - brogers@suse.com
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@ -143,6 +143,8 @@ Patch1103: ipxe-skge-Fix-building-with-GCC-6.patch
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Patch1104: ipxe-ath-Fix-building-with-GCC-6.patch
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Patch1105: ipxe-legacy-Fix-building-with-GCC-6.patch
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Patch1106: ipxe-util-v5.24-perl-errors-on-redeclare.patch
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Patch1107: ipxe-efi-fix-garbage-bytes-in-device-path.patch
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Patch1108: ipxe-efi-fix-uninitialised-data-in-HII.patch
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%endif
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# this is to make lint happy
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@ -749,6 +751,8 @@ pushd roms/ipxe
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%patch1104 -p1
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%patch1105 -p1
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%patch1106 -p1
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%patch1107 -p1
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%patch1108 -p1
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popd
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# as a safeguard, delete the firmware files that we intend to build
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@ -83,6 +83,8 @@ Patch1103: ipxe-skge-Fix-building-with-GCC-6.patch
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Patch1104: ipxe-ath-Fix-building-with-GCC-6.patch
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Patch1105: ipxe-legacy-Fix-building-with-GCC-6.patch
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Patch1106: ipxe-util-v5.24-perl-errors-on-redeclare.patch
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Patch1107: ipxe-efi-fix-garbage-bytes-in-device-path.patch
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Patch1108: ipxe-efi-fix-uninitialised-data-in-HII.patch
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%endif
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# this is to make lint happy
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@ -629,6 +631,8 @@ pushd roms/ipxe
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%patch1104 -p1
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%patch1105 -p1
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%patch1106 -p1
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%patch1107 -p1
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%patch1108 -p1
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popd
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