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xen: patch for XSAs: 197, 199, 207, 208, 209

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XSA-197 Issue Description:

> The compiler can emit optimizations in qemu which can lead to double
> fetch vulnerabilities.  Specifically data on the rings shared
> between qemu and the hypervisor (which the guest under control can
> obtain mappings of) can be fetched twice (during which time the
> guest can alter the contents) possibly leading to arbitrary code
> execution in qemu.

More: https://xenbits.xen.org/xsa/advisory-197.html

XSA-199 Issue Description:

> The code in qemu which implements ioport read/write looks up the
> specified ioport address in a dispatch table.  The argument to the
> dispatch function is a uint32_t, and is used without a range check,
> even though the table has entries for only 2^16 ioports.
>
> When qemu is used as a standalone emulator, ioport accesses are
> generated only from cpu instructions emulated by qemu, and are
> therefore necessarily 16-bit, so there is no vulnerability.
>
> When qemu is used as a device model within Xen, io requests are
> generated by the hypervisor and read by qemu from a shared ring.  The
> entries in this ring use a common structure, including a 64-bit
> address field, for various accesses, including ioport addresses.
>
> Xen will write only 16-bit address ioport accesses.  However,
> depending on the Xen and qemu version, the ring may be writeable by
> the guest.  If so, the guest can generate out-of-range ioport
> accesses, resulting in wild pointer accesses within qemu.

More: https://xenbits.xen.org/xsa/advisory-199.html

XSA-207 Issue Description:

> Certain internal state is set up, during domain construction, in
> preparation for possible pass-through device assignment.  On ARM and
> AMD V-i hardware this setup includes memory allocation.  On guest
> teardown, cleanup was erroneously only performed when the guest
> actually had a pass-through device assigned.

More: https://xenbits.xen.org/xsa/advisory-207.html

XSA-209 Issue Description:

> When doing bitblt copy backwards, qemu should negate the blit width.
> This avoids an oob access before the start of video memory.

More: https://xenbits.xen.org/xsa/advisory-208.html

XSA-208 Issue Description:

> In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine
> cirrus_bitblt_cputovideo fails to check wethehr the specified memory
> region is safe.

More: https://xenbits.xen.org/xsa/advisory-209.html
This commit is contained in:
Graham Christensen 2017-02-22 07:59:26 -05:00
parent 026cfee6b0
commit cc4919da89
No known key found for this signature in database
GPG key ID: 06121D366FE9435C
1 changed files with 36 additions and 6 deletions
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42
pkgs/applications/virtualization/xen/4.5.nix
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@ -41,6 +41,20 @@ let
rev = "refs/tags/qemu-xen-${version}";
sha256 = "014s755slmsc7xzy7qhk9i3kbjr2grxb5yznjp71dl6xxfvnday2";
};
patches = [
(xsaPatch {
name = "197-4.5-qemuu";
sha256 = "09gp980qdlfpfmxy0nk7ncyaa024jnrpzx9gpq2kah21xygy5myx";
})
(xsaPatch {
name = "208-qemuu-4.7";
sha256 = "0z9b1whr8rp2riwq7wndzcnd7vw1ckwx0vbk098k2pcflrzppgrb";
})
(xsaPatch {
name = "209-qemuu";
sha256 = "05df4165by6pzxrnizkw86n2f77k9i1g4fqqpws81ycb9ng4jzin";
})
];
}
{ git = { name = "qemu-xen-traditional";
url = https://xenbits.xen.org/git-http/qemu-xen-traditional.git;
@ -48,6 +62,24 @@ let
rev = "refs/tags/xen-${version}";
sha256 = "0n0ycxlf1wgdjkdl8l2w1i0zzssk55dfv67x8i6b2ima01r0k93r";
};
patches = [
(xsaPatch {
name = "197-4.5-qemut";
sha256 = "17l7npw00gyhqzzaqamwm9cawfvzm90zh6jjyy95dmqbh7smvy79";
})
(xsaPatch {
name = "199-trad";
sha256 = "0dfw6ciycw9a9s97sbnilnzhipnzmdm9f7xcfngdjfic8cqdcv42";
})
(xsaPatch {
name = "208-qemut";
sha256 = "0960vhchixp60j9h2lawgbgzf6mpcdk440kblk25a37bd6172l54";
})
(xsaPatch {
name = "209-qemut";
sha256 = "1hq8ghfzw6c47pb5vf9ngxwgs8slhbbw6cq7gk0nam44rwvz743r";
})
];
}
{ git = { name = "xen-libhvm";
url = https://github.com/ts468/xen-libhvm;
@ -63,12 +95,6 @@ let
}
];
# Note this lacks patches for:
# XSA-201
# XSA-199
# XSA-197
# they didn't apply, and there are plenty of other patches here
# to get this deployed as-is.
xenPatches = [ ./0001-libxl-Spice-image-compression-setting-support-for-up.patch
./0002-libxl-Spice-streaming-video-setting-support-for-upst.patch
./0003-Add-qxl-vga-interface-support-for-upstream-qem.patch
@ -116,6 +142,10 @@ let
name = "204-4.5";
sha256 = "083z9pbdz3f532fnzg7n2d5wzv6rmqc0f4mvc3mnmkd0rzqw8vcp";
})
(xsaPatch {
name = "207";
sha256 = "0wdlhijmw9mdj6a82pyw1rwwiz605dwzjc392zr3fpb2jklrvibc";
})
];
};