Meltdown fixed kernel...
Advisory will follow
There might be need for a rebuild for additional fixes... but please start testing so we can catch regressions...
Unfortunately there is still some regressions that will be fixed in 4.14.13, so a new kernel will be coming...
Ok, all currently known issues should be fixed with theese:
Update request: kernel-tmb 4.14.12 =>
Update request: kernel-tmb 4.14.13
Intel(R) Core(TM) i3 CPU M 350 @ 2.27GHz
Core Processor Integrated Graphics Controller
RTL8191SEvB Wireless LAN Controller
The following 6 packages are going to be installed:
50MB of additional disk space will be used.
47MB of packages will be retrieved.
Is it ok to continue?
$ uname -a
Linux localhost.localdomain 4.14.13-tmb-desktop-1.mga6 #1 SMP PREEMPT Wed Jan
10 13:49:50 UTC 2018 i686 i686 i686 GNU/Linux
wifi is working, konsole, Libreoffice, firefox, chromium all working.
Laptop – so sleep mode works when I close the lid and then hit resume.
working as designed
Seems fine on kaby lake mga6 64
model name : Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
Installed with cpupower, microcode, dracut, dkms-virtualbox
Network, suspend, resume, sound, vbox.
Nothing unusual to report.
Tested using the latest spectre & meltdown checker from ..
$ wget https://raw.githubusercontent.com/speed47/spectre-meltdown-checker/master/spectre-meltdown-checker.sh
# sh /home/claire/spectre-meltdown-checker.sh
Spectre and Meltdown mitigation detection tool v0.27
Checking for vulnerabilities against live running kernel Linux 4.14.13-tmb-desktop-1.mga6 #1 SMP PREEMPT Wed Jan 10 14:08:24 UTC 2018 x86_64
...snip spectre stuff
CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
* Kernel supports Page Table Isolation (PTI): YES
* PTI enabled and active: YES
> STATUS: NOT VULNERABLE (PTI mitigates the vulnerability)
A false sense of security is worse than no security at all, see --disclaimer
Advisory, added to svn:
subject: Updated kernel-tmb packages fix security vulnerabilities
- CVE 2017-5715
- CVE 2017-5753
This kernel-tmb update is based on the upstream 4.14.13 and and fixes
several security issues.
The most important fix in this update is for the security issue named
"Meltdown" that is fixed in theese kernels by enabling kernel Page
Table Isolation (KTPI). Note that according to AMD, this issue does
not effect Amd processors, so it is not enabled by default on systems
using Amd CPU.
The list of known security fixes and mitigations in this kernel:
kvm: vmx: Scrub hardware GPRs at VM-exit. This enables partial mitigation
in kvm for the security issue named "Spectre" (CVE 2017-5715, CVE 2017-5753).
Systems with microprocessors utilizing speculative execution and indirect
branch prediction may allow unauthorized disclosure of information to an
attacker with local user access via a side-channel analysis of the data
cache (CVE-2017-5754, "MeltDown").
A use-after-free vulnerability was found in network namespaces code
affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id()
in net/core/net_namespace.c does not check for the net::count value after
it has found a peer network in netns_ids idr, which could lead to double
free and memory corruption. This vulnerability could allow an unprivileged
local user to induce kernel memory corruption on the system, leading to a
crash. Due to the nature of the flaw, privilege escalation cannot be fully
ruled out, although it is thought to be unlikely (CVE-2017-15129).
The KVM implementation in the Linux kernel through 4.14.7 allows attackers
to obtain potentially sensitive information from kernel memory, aka a
write_mmio stack-based out-of-bounds read, related to arch/x86/kvm/x86.c
and include/trace/events/kvm.h (CVE-2017-17741).
The kernels are also fixed to allow loading cpu microcode for Amd
family 17 (Zen) processors.
For more info about Meltdown, Spectre and other fixes in this update,
see the refences.
An update for this issue has been pushed to the Mageia Updates repository.