group.of.nepali.translators team mailing list archive

[Launchpad Bug Tracker <2023220@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 5.15.0-76.83

---------------
linux (5.15.0-76.83) jammy; urgency=medium

  * jammy/linux: 5.15.0-76.83 -proposed tracker (LP: #2023905)

  * cls_flower: off-by-one in fl_set_geneve_opt (LP: #2023577)
    - net/sched: flower: fix possible OOB write in fl_set_geneve_opt()

  * Some INVLPG implementations can leave Global translations unflushed when
    PCIDs are enabled (LP: #2023220)
    - x86/mm: Avoid incomplete Global INVLPG flushes

 -- Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>  Thu, 15 Jun
2023 14:47:18 -0300

** Changed in: linux (Ubuntu Jammy)
       Status: Fix Committed => Fix Released

** Changed in: linux (Ubuntu Lunar)
       Status: Fix Committed => Fix Released

-- 
You received this bug notification because you are a member of नेपाली
भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/2023220

Title:
  Some INVLPG implementations can leave Global translations unflushed
  when PCIDs are enabled

Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux source package in Trusty:
  Incomplete
Status in linux-oem-6.1 source package in Trusty:
  Invalid
Status in linux source package in Xenial:
  Incomplete
Status in linux-oem-6.1 source package in Xenial:
  Invalid
Status in linux source package in Bionic:
  Incomplete
Status in linux-oem-6.1 source package in Bionic:
  Invalid
Status in linux source package in Focal:
  Fix Committed
Status in linux-oem-6.1 source package in Focal:
  Invalid
Status in linux source package in Jammy:
  Fix Released
Status in linux-oem-6.1 source package in Jammy:
  Fix Committed
Status in linux source package in Kinetic:
  Fix Committed
Status in linux-oem-6.1 source package in Kinetic:
  Invalid
Status in linux source package in Lunar:
  Fix Released
Status in linux-oem-6.1 source package in Lunar:
  Invalid
Status in linux source package in Mantic:
  Fix Released
Status in linux-oem-6.1 source package in Mantic:
  Invalid

Bug description:
  [Impact]
  When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush the global TLB entries. This can lead to info leak or undefined behavior.

  [Mitigation]
  Boot with nopcid on affected systems.

  [Test case]
  There is no particular test case.

  [Potential regressions]
  This affects performance on the affected systems. TLB behavior could also be affected.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2023220/+subscriptions