amd64-microcode 2.20160316.1 source package in Ubuntu

Changelog

amd64-microcode (2.20160316.1) unstable; urgency=critical

  * Upstream release 20160316 built from linux-firmware:
    + Updated Microcodes:
      sig 0x00600f20, patch id 0x0600084f, 2016-01-25
    + This microcode updates fixes a critical erratum on NMI handling
      introduced by microcode patch id 0x6000832 from the 20141028 update.
      The erratum is also present on microcode patch id 0x6000836.
    + THIS IS A CRITICAL STABILITY AND SECURITY UPDATE FOR THE EARLIER
      AMD PILEDRIVER PROCESSORS, including:
      + AMD Opteron 3300, 4300, 6300
      + AMD FX "Vishera" (43xx, 63xx, 83xx, 93xx, 95xx)
      + AMD processors with family 21, model 2, stepping 0
  * Robert Święcki, while fuzzing the kernel using the syzkaller tool,
    uncovered very strange behavior on an AMD FX-8320, later reproduced on
    other AMD Piledriver model 2, stepping 0 processors including the Opteron
    6300.  Robert discovered, using his proof-of-concept exploit code, that
    the incorrect behavior allows an unpriviledged attacker on an unpriviledged
    VM to corrupt the return stack of the host kernel's NMI handler.  At best,
    this results in unpredictable host behavior.  At worst, it allows for an
    unpriviledged user on unpriviledged VM to carry a sucessful host-kernel
    ring 0 code injection attack.
  * The erratum is timing-dependant, easily triggered by workloads that cause
    a high number of NMIs, such as running the "perf" tool.

 -- Henrique de Moraes Holschuh <email address hidden>  Sat, 19 Mar 2016 14:02:44 -0300

Upload details

Uploaded by:
Henrique de Moraes Holschuh on 2016-03-22
Uploaded to:
Stretch
Original maintainer:
Henrique de Moraes Holschuh
Architectures:
i386 amd64 x32
Section:
admin
Urgency:
Critically Urgent

See full publishing history Publishing

Series Pocket Published Component Section
Xenial release on 2016-03-23 multiverse admin

Builds

Xenial: [FULLYBUILT] amd64 [FULLYBUILT] i386

Downloads

File Size SHA-256 Checksum
amd64-microcode_2.20160316.1.dsc 1.6 KiB 203e8720e927f261dbd5c361248bdde041016eaf4ee45626bfbfe97b0b457bce
amd64-microcode_2.20160316.1.tar.xz 28.4 KiB 25c38601269a0c84f53dd6ec48136d50f600418a09557806b008f8b5d9cad72a

Available diffs

No changes file available.

Binary packages built by this source

amd64-microcode: Processor microcode firmware for AMD CPUs

 This package contains microcode patches for all AMD AMD64
 processors. AMD releases microcode patches to correct
 processor behavior as documented in the respective processor
 revision guides.
 .
 For Intel processors, please refer to the intel-microcode package.