This bug was fixed in the package linux - 4.4.0-168.197
---
linux (4.4.0-168.197) xenial; urgency=medium
* CVE-2018-12207
- KVM: x86: MMU: Encapsulate the type of rmap-chain head in a new struct
- KVM: x86: MMU: Consolidate quickly_check_mmio_pf() and
is_mmio_page_fault()
With previous xenial kernels:
XFAIL: nptl/tst-signal6
XFAIL: nptl/tst-thread-exit-clobber
XFAIL: signal/tst-minsigstksz-1
XFAIL: signal/tst-minsigstksz-2
XFAIL: signal/tst-minsigstksz-3
XFAIL: signal/tst-minsigstksz-3a
XFAIL: signal/tst-minsigstksz-4
XFAIL: support/tst-xsigstack
With the kernel
Thanks @adconrad
This is the only outstanding issue for Xenial. I think we can wait
another day or so before we have to make a final decision. I'll wait
until tomorrow and then mark it as verified if you haven't already done
so by then.
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I completely missed the verification ping here in the sea of other
kernel bug mail that I get. Will work with the LP team to get this
verified as quickly as I can, but if you need to make a revert/ship call
before I can, the patches should be pretty harmless even if they don't
fix the bug, so I'd
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag
Marking the bug as Fix-committed based on this:
https://lists.ubuntu.com/archives/kernel-team/2019-October/104720.html
** Changed in: linux (Ubuntu Xenial)
Status: Confirmed => Fix Committed
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** Description changed:
+ [Impact]
+
+ The arm64 kernel allows one to run aarch32 processes on an aarch64
+ processor, using the standard 32/64-bit syscall compatibility. However
+ this compat layer does not correctly validate the arguments of the
+ sigaltstack syscall which can result in
Relevant patches (from upstream v4.20):
24951465cbd2 arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ
22839869f21a signal: Introduce COMPAT_SIGMINSTKSZ for use in
compat_sys_sigaltstack
Applied to Bionic Ubuntu-4.15.0-59.66.
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** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => Confirmed
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Confirmed that this is fixed in 4.15 as of (at least) 4.15.0-62-generic.
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https://bugs.launchpad.net/bugs/1844155
Title:
arm64: sigaltstack fails with MINSIGSTKSZ for
** Changed in: linux (Debian)
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1844155
Title:
arm64: sigaltstack fails with MINSIGSTKSZ for 32-bit
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1844155
Title:
arm64: sigaltstack fails with MINSIGSTKSZ for 32-bit
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