diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/08-xen-pt-mark-all-PCIe-capability-bits-read-only-CVE-2015-4106.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/08-xen-pt-mark-all-PCIe-capability-bits-read-only-CVE-2015-4106.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/08-xen-pt-mark-all-PCIe-capability-bits-read-only-CVE-2015-4106.patch b/meta/recipes-devtools/qemu/qemu/08-xen-pt-mark-all-PCIe-capability-bits-read-only-CVE-2015-4106.patch new file mode 100644 index 0000000..4236a12 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/08-xen-pt-mark-all-PCIe-capability-bits-read-only-CVE-2015-4106.patch @@ -0,0 +1,38 @@ +Upstream-Status: Backport + +Signed-off-by: Kai Kang <kai.kang@windriver.com> + +From 45ebe3916ab16f859ed930e92fbd52d84d5dcdaf Mon Sep 17 00:00:00 2001 +From: Jan Beulich <jbeulich@suse.com> +Date: Tue, 2 Jun 2015 15:07:01 +0000 +Subject: xen/pt: mark all PCIe capability bits read-only +Bug-Debian: http://bugs.debian.org/787547 + +xen_pt_emu_reg_pcie[]'s PCI_EXP_DEVCAP needs to cover all bits as read- +only to avoid unintended write-back (just a precaution, the field ought +to be read-only in hardware). + +This is a preparatory patch for XSA-131. + +Signed-off-by: Jan Beulich <jbeulich@suse.com> +Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> +--- + hw/xen/xen_pt_config_init.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c +index 3833b9e..9f6c00e 100644 +--- a/hw/xen/xen_pt_config_init.c ++++ b/hw/xen/xen_pt_config_init.c +@@ -871,7 +871,7 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = { + .offset = PCI_EXP_DEVCAP, + .size = 4, + .init_val = 0x00000000, +- .ro_mask = 0x1FFCFFFF, ++ .ro_mask = 0xFFFFFFFF, + .emu_mask = 0x10000000, + .init = xen_pt_common_reg_init, + .u.dw.read = xen_pt_long_reg_read, +-- +2.1.4 + |
