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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202209-12">
<title>GRUB: Multiple Vulnerabilities</title>
<synopsis>Multiple vulnerabilities have been discovered in GRUB, the worst of which may allow for secureboot bypass.</synopsis>
<product type="ebuild">grub</product>
<announced>2022-09-25</announced>
<revised count="1">2022-09-25</revised>
<bug>850535</bug>
<bug>835082</bug>
<access>local</access>
<affected>
<package name="sys-boot/grub" auto="yes" arch="*">
<unaffected range="ge">2.06</unaffected>
<vulnerable range="lt">2.06</vulnerable>
</package>
</affected>
<background>
<p>GNU GRUB is a multiboot boot loader used by most Linux systems.</p>
</background>
<description>
<p>Multiple vulnerabilities have been discovered in GRUB. Please review the CVE identifiers referenced below for details.</p>
</description>
<impact type="high">
<p>Please review the referenced CVE identifiers for details.</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All GRUB users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-boot/grub-2.06-r3"
</code>
<p>After upgrading, make sure to run the grub-install command with options appropriate for your system. See the GRUB2 Gentoo Wiki page for directions. Your system will be vulnerable until this action is performed.</p>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-3695">CVE-2021-3695</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-3696">CVE-2021-3696</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-3697">CVE-2021-3697</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-3981">CVE-2021-3981</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-28733">CVE-2022-28733</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-28734">CVE-2022-28734</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-28735">CVE-2022-28735</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-28736">CVE-2022-28736</uri>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-28737">CVE-2022-28737</uri>
</references>
<metadata tag="requester" timestamp="2022-09-25T13:35:30.406656Z">ajak</metadata>
<metadata tag="submitter" timestamp="2022-09-25T13:35:30.411250Z">ajak</metadata>
</glsa>
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