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operating-systems: add Linux in front of kernel (#1364)

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Co-authored-by: Dawid Potocki <dpot@disroot.org>
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Mikaela Suomalainen 2019-09-30 00:03:01 +03:00 committed by nitrohorse
parent 0fda8f665d
commit 614648ffa6
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@ -56,7 +56,7 @@ gitlab="https://salsa.debian.org/qa/debsources"
<p><em><a href="https://support.microsoft.com/en-us/help/4073757/protect-windows-devices-from-speculative-execution-side-channel-attack">This also affects Windows 10</a>, but it doesn't expose this information or mitigation instructions as easily. MacOS users check <a href="https://support.apple.com/en-us/HT210108">How to enable full mitigation for Microarchitectural Data Sampling (MDS) vulnerabilities on Apple Support</a>.</em></p> <p><em><a href="https://support.microsoft.com/en-us/help/4073757/protect-windows-devices-from-speculative-execution-side-channel-attack">This also affects Windows 10</a>, but it doesn't expose this information or mitigation instructions as easily. MacOS users check <a href="https://support.apple.com/en-us/HT210108">How to enable full mitigation for Microarchitectural Data Sampling (MDS) vulnerabilities on Apple Support</a>.</em></p>
<p>When running a enough recent kernel, you can check the CPU vulnerabilities it detects by <code>tail -n +1 /sys/devices/system/cpu/vulnerabilities/*</code>. By using <code>tail -n +1</code> instead of <code>cat</code>, the file names are also visible.</p> <p>When running a enough recent Linux kernel, you can check the CPU vulnerabilities it detects by <code>tail -n +1 /sys/devices/system/cpu/vulnerabilities/*</code>. By using <code>tail -n +1</code> instead of <code>cat</code>, the file names are also visible.</p>
<p> <p>
In case you have an Intel CPU, you may notice "SMT vulnerable" display after running the <code>tail</code> command. To mitigate this, disable <a href="https://en.wikipedia.org/wiki/Hyper-threading">hyper-threading</a> from the UEFI/BIOS. You can also take the following mitigation steps below if your system/distribution uses GRUB and supports <code>/etc/default/grub.d/</code>: In case you have an Intel CPU, you may notice "SMT vulnerable" display after running the <code>tail</code> command. To mitigate this, disable <a href="https://en.wikipedia.org/wiki/Hyper-threading">hyper-threading</a> from the UEFI/BIOS. You can also take the following mitigation steps below if your system/distribution uses GRUB and supports <code>/etc/default/grub.d/</code>: