High severity8.2NVD Advisory· Published Mar 3, 2021· Updated Jun 17, 2026
CVE-2020-25632
CVE-2020-25632
Description
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. 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
0No linked articles in our index yet.