High severity7.0NVD Advisory· Published Jul 6, 2022· Updated Jun 17, 2026
CVE-2021-3697
CVE-2021-3697
Description
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
99- cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.1:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openshift_container_platform:4.10:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*
- osv-coords65 versionspkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/almalinux/grub2-efi-x64-modulespkg:rpm/almalinux/grub2-ppc64le-modulespkg:rpm/almalinux/shim-x64pkg:rpm/almalinux/shim-unsigned-x64pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/grub2&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg: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%20Manager%20Proxy%20Module%204.2pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/opensuse/grub2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/almalinux/grub2-efi-aa64-modulespkg:rpm/almalinux/grub2-efi-x64pkg:rpm/almalinux/grub2-efi-x64-cdbootpkg:rpm/almalinux/grub2-pc-modulespkg:rpm/almalinux/grub2-tools-minimalpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/almalinux/grub2-efi-ia32pkg:rpm/almalinux/grub2-commonpkg:rpm/almalinux/grub2-pcpkg:rpm/almalinux/grub2-toolspkg:rpm/almalinux/shim-aa64pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Server%204.1pkg:rpm/almalinux/grub2-ppc64lepkg:rpm/almalinux/grub2-efi-ia32-cdbootpkg:rpm/almalinux/grub2-efi-ia32-modulespkg:rpm/almalinux/grub2-efi-aa64pkg:rpm/almalinux/grub2-tools-efipkg:rpm/almalinux/grub2-tools-extrapkg:rpm/almalinux/shim-ia32pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%20Module%204.3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/grub2&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/almalinux/grub2-efi-aa64-cdbootpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3
< 2.02-137.2+ 64 more
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150300.3.5.1
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-115.67.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.06-25.1
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 1:2.06-27.el9_0.7.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150300.22.20.2
- grub2/grub2description
Patches
Vulnerability mechanics
References
3- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- security.gentoo.org/glsa/202209-12nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20220930-0001/nvdThird Party Advisory
News mentions
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