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Add article syspatch pmapglobal

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HUC Stéphane 2021-05-24 00:05:51 +02:00
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---
categories: ['Syspatch']
date: 2021-05-23T23:55:15+02:00
description: "Correctif OpenBSD: pmapglobal"
draft: false
tags: ['Syspatch','pmapglobal','6.8','6.9']
title: "Syspatch : pmapglobal (2021/05/22)"
---
## Correctifs de fiabilité pmapglobal
**Les machines Intel récentes pouvaient planter ou se bloquer car les mappages globaux venant de la TLB n'étaient pas vidés**.
- Architecture ciblée : amd64.
---
***Note** : La TLB est une mémoire cache du processeur.*
---
## Syspatch
```ksh
# syspatch
```
Ensuite [redémarrez](#restart) la machine car ce correctif affecte le noyau !
## Restart
```ksh
# reboot
```
---
## Documentations
⇒ Plus d'informations sur les pages d'Errata [6.9][1] et [6.8][2]… <br>
*et leurs versions FR respectives : [6.9 FR][3] et [6.8 FR][4].*
⇒ Article Wikipédia à-propos de la TLB : [FR][10], [EN][11]
---
[1]: https://openbsd.org/errata69.html
[2]: https://openbsd.org/errata68.html
[3]: https://wiki.openbsd.fr.eu.org/doku.php/openbsd.org/errata69
[4]: https://wiki.openbsd.fr.eu.org/doku.php/openbsd.org/errata68
[10]: https://fr.wikipedia.org/wiki/Translation_lookaside_buffer
[11]: https://en.wikipedia.org/wiki/Translation_lookaside_buffer

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<title type="text">OpenBSD Pour Tous 🐡</title>
<subtitle type="html">OBSD4* : Site de la communauté francophone autour d&#39;OpenBSD.</subtitle>
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<title type="text">Syspatch : net80211 (2021/05/20)</title>
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<rights>[CC 0](https://creativecommons.org/publicdomain/zero/1.0/deed.fr)</rights><summary type="html">Correctif OpenBSD: net80211 (Wifi)</summary>
<content type="html">&lt;h2 id=&#34;correctif-de-sécurité&#34;&gt;Correctif de sécurité&lt;/h2&gt;
&lt;p&gt;&lt;strong&gt;Une validation insuffisante des trames A-MSDU et des frames 802.11 fragmentées pouvait être réalisée pour injecter des frames arbitraires&lt;/strong&gt;.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Une validation insuffisante des trames A-MSDU et des frames 802.11 fragmentées pouvait être abusée pour injecter des frames arbitraires&lt;/strong&gt;.&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Architectures ciblées : toutes celles supportées par le projet OpenBSD.&lt;/li&gt;
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<summary class="summary p-summary">
Correctif de sécurité Une validation insuffisante des trames A-MSDU et des frames 802.11 fragmentées pouvait être réalisée pour injecter des frames arbitraires.
Correctif de sécurité Une validation insuffisante des trames A-MSDU et des frames 802.11 fragmentées pouvait être abusée pour injecter des frames arbitraires.
Architectures ciblées : toutes celles supportées par le projet OpenBSD. Pour toutes les architectures supportées :
amd64, arm64, i386 par syspatch armv7, hppa, landisk, loongson, luna88k, macppc, sparc64 par recompilation Syspatch Cette étape ne concerne que les architectures amd64, arm64, i386 !
</summary>

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