| Commit message (Collapse) | Author | Age | Files | Lines |
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(CVE-2011-4127, RHBZ#757071)
CVE-2011-4127 is a serious qemu & kernel privilege escalation bug
found by Paolo Bonzini.
http://seclists.org/oss-sec/2011/q4/536
An untrusted guest kernel is able to issue special SG_IO ioctls on
virtio devices which qemu passes through to the host kernel without
filtering or sanitizing. These ioctls allow raw sectors from the
underlying host device to be read and written. Significantly, neither
qemu nor the host kernel checks that the range of sectors is within
the partition / LV assigned to the guest. For example, if the guest
is assigned host partition /dev/sda3, it would be able to read or
write any part of /dev/sda including other partitions and the boot
sector. Exploits through LVs passed to the guest are also possible,
with some limitations. File-backed virtual block devices are not
vulnerable. Non-virtio block devices are not vulnerable.
This patch mitigates the problem by disabling the SG_IO ioctl
passthrough in qemu. Thus if libguestfs is examining an untrusted
guest and the libguestfs appliance/daemon is compromised (eg. by
executing guest commands, or through some other compromise), then the
compromised appliance will not be able to issue the above SG_IO ioctls
and exploit the host.
Note that this is just mitigation for libguestfs. Users will still
want to fully update their host kernel, qemu/KVM and libvirt, in order
to prevent other (non-libguestfs) routes to compromise.
The following versions of libguestfs (will/have) this patch applied.
libguestfs >= 1.15.13
libguestfs >= 1.14.8
libguestfs >= 1.12.11
libguestfs >= 1.10.12
libguestfs >= 1.8.16
Earlier versions may be vulnerable unless a downstream packager has
applied this patch.
Cc: Hilko Bengen <bengen@hilluzination.de>
(cherry picked from commit 9a5f784d511a8f00a8386f316eab41fe660430db)
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fuse_main can return any non-zero value on error. In particular on
certain sorts of error such as unsupported -o options it returns 1
(not -1).
Therefore make sure any non-zero return is turned into EXIT_FAILURE.
(Thanks Pádraig Brady)
(cherry picked from commit ae45cee728039d7724fc73e5ffb2550c8054d268)
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In particular this stops a problem with guestmount where if the -i
option half-recognizes the guest OS, it would mount the disk (and
fail, giving only warnings), leaving the mountpoint unusable.
(Thanks Pádraig Brady)
(cherry picked from commit 54e91da925323642e67b8ce4b95899fe4b7a51c4)
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This also adds comprehensive tests for utimens on regular files,
directories (RHBZ#761451), named pipes (RHBZ#761460), symbolic links,
block and char devices.
Note that there is a small change in the (previously undefined)
semantics of this call: It now sets the time on a symbolic link
itself, not on what the symbolic link points to.
(cherry picked from commit 19e2f5aa4fd4ed70b505661d918b5575616ad441)
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You don't need to open the file O_WRONLY in order to call futimens on
the file descriptor. Opening it O_WRONLY fails for directories.
Therefore open O_RDONLY instead.
(cherry picked from commit 31fba8d8033216f8a288e75fe3f575b73b9ef925)
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(cherry picked from commit 98edfac1ee70bcf15ee7caebc306e11cdbbb0d9a)
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inspection (RHBZ#760775).
(cherry picked from commit 7d3848ddc046f79cc1112809bd9970eea8060018)
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(cherry picked from commit 41a7a68cf33a174ba950aa29951a07c391a16b4d)
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(cherry picked from commit 43942b08cfbcf91bef29ec532f3d097a8519c982)
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(cherry picked from commit 2972987d0257d9c3d26b53f961e802d121b436cd)
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Augeas 0.10 depends on libxml2, so this is now required in the
appliance (in fact, it was already present).
However this exposed two bugs:
(1) In libguestfs we use a home-brewed recipe for Augeas flags,
resulting in this error:
/usr/include/augeas.h:24:25: fatal error: libxml/tree.h: No such file or directory
(2) Augeas's own augeas.pc didn't include the libxml2 flags, so
it was broken. This requires a patch to Augeas 0.10, see:
https://www.redhat.com/archives/augeas-devel/2011-December/msg00008.html
Change to using pkg-config to detect Augeas. It is still an optional
library.
(cherry picked from commit 615924abaa968398d6529529fa2f31ae23de825b)
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(cherry picked from commit b7addee24d211014086c44bcef6a0c799e4fb987)
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(cherry picked from commit 655f8037def7742a608fb272004eec51424ac31d)
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Just add the -f option to mkfs.xfs to make sure we can
make a xfs filesystem when the device already has a
filesystem on it.
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
(cherry picked from commit 1970a14178b5c53569965d35e54efead6c4c4bdc)
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documentation
Since some modules (`getopt', for example) may copy files
into the build directory, `top_builddir/lib' is needed as well as
`top_srcdir/lib'. -- GNU Gnulib manual, section 2.2 Initial import
(cherry picked from commit 1a35ca59088e572c11633e85524bb282cb436186)
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(cherry picked from commit ce331df0f1857bccebaaddfac79677bc9f527197)
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(cherry picked from commit e7e3a32edc29e3448b1d7efb3f6b53c5173c4e9c)
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(cherry picked from commit 00c9755ee3bea98968acea47bac858db94f7fbe2)
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(cherry picked from commit eb7ec6170eca278fb910e18ca1f7ca81c6b507c0)
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(cherry picked from commit efef3e3c1205e5476044f41fb88385e3ba07468d)
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(cherry picked from commit 27d00960c93b26c68fa1f4068502c32a6e3b5e94)
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(cherry picked from commit cee513112adcf4084d6be9e3b5037b7b54c9f514)
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This adds the virt-sparsify --debug-gc option which causes
virt-sparsify to call Gc.compact before exiting, allowing
GC and memory problems to be tested.
Add an extratest which runs virt-sparsify under valgrind.
(cherry picked from commit 14b1e7b963cd5446ab76a067085b91925dd5d3e3)
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This adds the virt-resize --debug-gc option which causes
virt-resize to call Gc.compact before exiting, allowing
GC and memory problems to be tested.
Add an extratest which runs virt-resize under valgrind.
(cherry picked from commit 7708d3e04f6ec3985fd74ee1a44a5615d43065e2)
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(cherry picked from commit 082a55f76cd61f3590976f6b095552ea65259ced)
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RBufferOut binding didn't free the buffer after copying it onto
the OCaml heap.
Found by valgrind.
(cherry picked from commit 6bd0eec12f2e39360847bfe7a9f50628cc89ed8e)
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(cherry picked from commit e1f395defc6db5bbc82537af6e517d94216b7d4b)
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(cherry picked from commit d81c0829ea4a99aadb98df37be9543a973269041)
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(cherry picked from commit aa4eb4cd109dda0dc7dfdd66a5163a18b0be2277)
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This is just code motion.
(cherry picked from commit 6ccae55ddcf0c08cd1b1cdbc07afeed043ad410d)
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(cherry picked from commit c5dbb1e63a8e0c45c7088dd2e58f5abbcfc30620)
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The error message now looks like this:
guestfish: '/dev/vda6' could not be mounted. Did you mean one of these?
/dev/sda1 (ext4)
/dev/vg_f15x32/lv_root (ext4)
/dev/vg_f15x32/lv_swap (swap)
Note that '/dev/sda1' has been canonicalized.
(cherry picked from commit f5bfc68fdb3e25b9d75c65e3f5e88983584b25ed)
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This also frees the list returned by guestfs_list_filesystems.
(cherry picked from commit 450134501c37f1dd1b898dc390591a3f84ec18b4)
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(cherry picked from commit b5b4816ab006ce09b7a7103dbe87b3129046648d)
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This updates commit c55bad93fbde03a3daa6058913f02098c45e55f5.
(cherry picked from commit be7cb789069afc93e7c1b0e7a1a9a293dc846d45)
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export SKIP_TEST_LAUNCH_RACE_PL=1
will cause this test to be skipped.
(cherry picked from commit 3bbcbd5eeadabb1cc5a40b2f8ae586e6aafd39c6)
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These tests are optional, and require a special environment and
tools to run.
(cherry picked from commit c55bad93fbde03a3daa6058913f02098c45e55f5)
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If you enabled debugging (eg. LIBGUESTFS_DEBUG=1) then every
debug message printed would be leaked.
(cherry picked from commit dd76ce2b4c93dd10d8eca9ab7c77bc831f103d03)
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(cherry picked from commit bfc0a5f58d3cb6faad5a44bed392f33190e62246)
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(cherry picked from commit cd3d28491dd19d25a6c04a8bc6a7ec94bded413b)
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This is the minimum alignment. 1MB would be better.
Note that the exact behaviour is not defined in the API.
(cherry picked from commit c4381dba737d5cb8aad8e1b2e2123b0fcaff1d1a)
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In particular, virt-alignment-scan -a /dev/null would segfault
because of an error returned by parted.
(cherry picked from commit 7b192f5a672197ad67ac23501e420c674aa2f3a9)
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This change is in support of the addition of MD support to fstab inspection.
(cherry picked from commit 373dca7d12a8741e116205b4a3ac67a7d82cc782)
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(cherry picked from commit 011a248381cacd6751deb1d1be122cc9bd6aba09)
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(cherry picked from commit c8cb3d27b62da20be6b2fa06f1ce6b63a722c32b)
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