** Tags added: cscc
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https://bugs.launchpad.net/bugs/1787993
Title:
[Bionic] Spectre v4 mitigation (Speculative Store Bypass Disable)
support for arm64 using SMC firmware call to set
This bug was fixed in the package linux - 4.15.0-36.39
---
linux (4.15.0-36.39) bionic; urgency=medium
* CVE-2018-14633
- iscsi target: Use hex2bin instead of a re-implementation
* CVE-2018-17182
- mm: get rid of vmacache_flush_all() entirely
linux (4.15.0-35.38) bionic;
-- SRU Verification --
Enabled SSBD v4 in firmware and booted the -proposed kernel, no regressions
were found on boot.
- Enable SSBD V4 in firmware. -
CAVM_CN99xx# env set core_feature_mask 0x20
core_feature_mask is set to 32
Env Var core_feature_mask set with Value 32
Execute 'env save' Comma
-- SRU verification --
No regressions were found booting with the SRU kernel.
ubuntu@helo:~$ uname -a
Linux helo 4.15.0-35-generic #38-Ubuntu SMP Wed Sep 12 10:35:16 UTC 2018
aarch64 aarch64 aarch64 GNU/Linux
ubuntu@helo:~$ dmesg | grep -i ssbd
[0.00] Kernel command line: BOOT_IMAGE=/b
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-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1787993
Title:
[Bionic] Spectre v4 mitigation (Speculative Store Bypass
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1787993
Title:
[Bionic] Spectre v4 mitigation (Speculative Store Bypass Disable)
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
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** Description changed:
[Impact]
- Track: Spectre v4 mitigation (Speculative Store Bypass Disable) support for
arm64 using SMC firmware call to set a hardware chicken bit. Patch now in 4.18
to Bionic.
+ Spectre v4 mitigation (Speculative Store Bypass Disable) support for arm64
+ was implement
Tyler Hicks pointed out that Cortex-A57, Cortex-A72, Cortex-A73, and Cortex-A75
all just receive
firmware updates that disabled memory disambiguation at boot time to mitigate
SSB. The following page indicates that the patches are only relevant for
Cortex-A76.
https://developer.arm.com/support/a
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)
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https://bugs.launchpad.net/bugs/1787993
Title:
[Bionic] Spectre v4 mitigation
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