<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[⚠️ 🤪 🔥  Nouvelle vuln kernel Linux aujourd&#x27;hui : ssh-keysign-pwn 🔑]]></title><description><![CDATA[<p><img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/26a0.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--warning" style="height:23px;width:auto;vertical-align:middle" title="⚠" alt="⚠" />️ 🤪  <img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/1f525.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--fire" style="height:23px;width:auto;vertical-align:middle" title="🔥" alt="🔥" /> <img class="not-responsive emoji" src="https://media.infosec.exchange/infosec.exchange/custom_emojis/images/000/028/559/original/14cf678a291c4dcc.png" title=":nes_fire:" /> <br />Nouvelle vuln kernel Linux aujourd'hui : ssh-keysign-pwn <img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/1f511.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--key" style="height:23px;width:auto;vertical-align:middle" title="🔑" alt="🔑" /></p><p>Pas une LPE cette fois, mais lecture de fichiers root en user non-privilégié :<br />• Clés privées SSH host (ecdsa/ed25519/rsa)<br />• /etc/shadow → crack offline</p><p>Le bug : ptrace_may_access() saute le check dumpable quand mm=NULL. Race window entre exit_mm() et exit_files(). Flaggé par Jann Horn en 2020... corrigé en 2026. 6 ans.</p><p>Confirmé sur : Debian 13, Ubuntu 22/24/26, Arch, CentOS, RPi OS. Pas de prérequis CONFIG spécifique  donc cela semblerait bien plus universel que Fragnesia.</p><p>Patch mergé dans mainline par Linus aujourd'hui (31e62c2ebbfd), pas encore dans les kernels stables. <br />Pas de CVE assigné à ce stade.<br /><img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/1f447.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--point_down" style="height:23px;width:auto;vertical-align:middle" title="👇" alt="👇" /> <br /><a href="https://github.com/0xdeadbeefnetwork/ssh-keysign-pwn" rel="nofollow noopener"><span>https://</span><span>github.com/0xdeadbeefnetwork/s</span><span>sh-keysign-pwn</span></a></p><p>"Six-Year-Old Linux Kernel Flaw Lets Unprivileged Users Read Root-Owned Files<br />"<br /><img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/2b07.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--arrow_down" style="height:23px;width:auto;vertical-align:middle" title="⬇" alt="⬇" />️ <br /><a href="https://9to5linux.com/six-year-old-linux-kernel-flaw-lets-unprivileged-users-read-root-owned-files" rel="nofollow noopener"><span>https://</span><span>9to5linux.com/six-year-old-lin</span><span>ux-kernel-flaw-lets-unprivileged-users-read-root-owned-files</span></a></p><p><a href="https://infosec.exchange/tags/cyberVeille" rel="tag">#<span>cyberVeille</span></a> <a href="https://infosec.exchange/tags/Linux" rel="tag">#<span>Linux</span></a> <a href="https://infosec.exchange/tags/sshkeysignpwn" rel="tag">#<span>sshkeysignpwn</span></a></p>]]></description><link>https://board.circlewithadot.net/topic/a2d209a1-7582-4f52-8455-2e26516761bf/nouvelle-vuln-kernel-linux-aujourd-hui-ssh-keysign-pwn</link><generator>RSS for Node</generator><lastBuildDate>Fri, 05 Jun 2026 20:41:50 GMT</lastBuildDate><atom:link href="https://board.circlewithadot.net/topic/a2d209a1-7582-4f52-8455-2e26516761bf.rss" rel="self" type="application/rss+xml"/><pubDate>Fri, 15 May 2026 07:11:00 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to ⚠️ 🤪 🔥  Nouvelle vuln kernel Linux aujourd&#x27;hui : ssh-keysign-pwn 🔑 on Fri, 15 May 2026 09:31:31 GMT]]></title><description><![CDATA[<p><a href="https://infosec.exchange/tags/sshkeysignpwn" rel="tag">#<span>sshkeysignpwn</span></a></p>]]></description><link>https://board.circlewithadot.net/post/https://infosec.exchange/users/decio/statuses/116577893868513891</link><guid isPermaLink="true">https://board.circlewithadot.net/post/https://infosec.exchange/users/decio/statuses/116577893868513891</guid><dc:creator><![CDATA[decio@infosec.exchange]]></dc:creator><pubDate>Fri, 15 May 2026 09:31:31 GMT</pubDate></item><item><title><![CDATA[Reply to ⚠️ 🤪 🔥  Nouvelle vuln kernel Linux aujourd&#x27;hui : ssh-keysign-pwn 🔑 on Fri, 15 May 2026 08:38:21 GMT]]></title><description><![CDATA[<p>"Logic bug in the Linux kernel's __ptrace_may_access() function"<br /><img src="https://board.circlewithadot.net/assets/plugins/nodebb-plugin-emoji/emoji/android/1f447.png?v=28325c671da" class="not-responsive emoji emoji-android emoji--point_down" style="height:23px;width:auto;vertical-align:middle" title="👇" alt="👇" /> <br /><a href="https://www.openwall.com/lists/oss-security/2026/05/15/2" rel="nofollow noopener"><span>https://www.</span><span>openwall.com/lists/oss-securit</span><span>y/2026/05/15/2</span></a></p><p><a href="https://infosec.exchange/tags/CyberVeille" rel="tag">#<span>CyberVeille</span></a>  <a href="https://infosec.exchange/tags/sshkeysignpwn" rel="tag">#<span>sshkeysignpwn</span></a></p>]]></description><link>https://board.circlewithadot.net/post/https://infosec.exchange/users/decio/statuses/116577684794443664</link><guid isPermaLink="true">https://board.circlewithadot.net/post/https://infosec.exchange/users/decio/statuses/116577684794443664</guid><dc:creator><![CDATA[decio@infosec.exchange]]></dc:creator><pubDate>Fri, 15 May 2026 08:38:21 GMT</pubDate></item></channel></rss>