High severity7.6NVD Advisory· Published Mar 3, 2021· Updated Jun 17, 2026
CVE-2020-25647
CVE-2020-25647
Description
A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
41- grub2/grub2description
- osv-coords39 versionspkg:rpm/almalinux/shim-aa64pkg:rpm/almalinux/shim-ia32pkg:rpm/almalinux/shim-unsigned-aarch64pkg:rpm/almalinux/shim-unsigned-x64pkg:rpm/almalinux/shim-x64pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/grub2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/grub2&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/grub2&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 15.4-2.el8_1.alma+ 38 more
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 15-7.el8_1.alma
- (no CPE)range: < 15.4-4.el8_1.alma
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 2.04-lp152.7.22.7
- (no CPE)range: < 2.06-7.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.04-9.34.1
- (no CPE)range: < 2.04-9.34.1
- (no CPE)range: < 2.02-0.66.26.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
Patches
Vulnerability mechanics
References
4- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- security.gentoo.org/glsa/202104-05nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20220325-0001/nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/nvd
News mentions
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