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
67- grub2/grub2description
- osv-coords65 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/almalinux/shim-aa64pkg:rpm/almalinux/shim-ia32pkg:rpm/almalinux/shim-unsigned-x64pkg:rpm/almalinux/shim-x64pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.4pkg: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%20Enterprise%20Storage%207pkg: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%20SP2-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-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%20Micro%205.1pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg: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%20SP2-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg: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%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%204.1pkg: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%20Retail%20Branch%20Server%204.1pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Server%204.1pkg: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
< 1:2.02-123.el8_6.8.alma+ 64 more
- (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: < 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: < 1:2.02-123.el8_6.8.alma
- (no CPE)range: < 1:2.02-123.el8_6.8.alma
- (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: < 15.6-1.el8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 15.6-1.el8.alma
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.06-25.1
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.04-150300.3.5.1
- (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: < 2.04-150300.22.20.2
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.02-115.67.2
- (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: < 2.02-150100.123.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-150000.122.12.2
- (no CPE)range: < 2.02-150100.123.12.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150300.22.20.2
- (no CPE)range: < 2.06-150400.11.5.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.04-150200.9.63.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-143.2
- (no CPE)range: < 2.02-137.2
- (no CPE)range: < 2.02-143.2
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
0No linked articles in our index yet.