High severity7.5NVD Advisory· Published Oct 25, 2023· Updated Jun 17, 2026
CVE-2023-4692
CVE-2023-4692
Description
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
41- osv-coords39 versionspkg:rpm/almalinux/grub2-commonpkg:rpm/almalinux/grub2-efi-aa64pkg:rpm/almalinux/grub2-efi-aa64-cdbootpkg:rpm/almalinux/grub2-efi-aa64-modulespkg:rpm/almalinux/grub2-efi-ia32pkg:rpm/almalinux/grub2-efi-ia32-cdbootpkg:rpm/almalinux/grub2-efi-ia32-modulespkg:rpm/almalinux/grub2-efi-x64pkg:rpm/almalinux/grub2-efi-x64-cdbootpkg:rpm/almalinux/grub2-efi-x64-modulespkg:rpm/almalinux/grub2-pcpkg:rpm/almalinux/grub2-pc-modulespkg:rpm/almalinux/grub2-ppc64lepkg:rpm/almalinux/grub2-ppc64le-modulespkg:rpm/almalinux/grub2-toolspkg:rpm/almalinux/grub2-tools-efipkg:rpm/almalinux/grub2-tools-extrapkg:rpm/almalinux/grub2-tools-minimalpkg:rpm/opensuse/grub2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/grub2&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%204.2pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%20Module%204.2pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%20Module%204.3pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Server%204.2
< 1:2.06-77.el9.alma.1+ 38 more
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.02-156.el8.alma.1
- (no CPE)range: < 1:2.02-156.el8.alma.1
- (no CPE)range: < 1:2.02-156.el8.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 1:2.06-77.el9.alma.1
- (no CPE)range: < 2.12~rc1-5.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.04-150300.3.11.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.06-150400.11.38.1
- (no CPE)range: < 2.06-150400.11.38.1
- (no CPE)range: < 2.06-150500.29.8.1
- (no CPE)range: < 2.06-150400.11.38.1
- (no CPE)range: < 2.06-150500.29.8.1
- (no CPE)range: < 2.06-150400.11.38.1
- (no CPE)range: < 2.06-150500.29.8.1
- (no CPE)range: < 2.02-169.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.02-169.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.04-150300.22.43.1
- (no CPE)range: < 2.06-150400.11.38.1
- (no CPE)range: < 2.04-150300.22.43.1
Patches
Vulnerability mechanics
References
13- dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/nvdExploitThird Party Advisory
- access.redhat.com/security/cve/CVE-2023-4692nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- seclists.org/oss-sec/2023/q4/37nvdMailing ListThird Party Advisory
- lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.htmlnvdMailing List
- access.redhat.com/errata/RHSA-2024:2456nvd
- access.redhat.com/errata/RHSA-2024:3184nvd
- lists.debian.org/debian-lts-announce/2023/10/msg00007.htmlnvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/nvd
- security.gentoo.org/glsa/202311-14nvd
- security.netapp.com/advisory/ntap-20231208-0002/nvd
News mentions
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