CVE-2021-3981
grub2-common: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable...
CVE-2021-3981 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2021-3981, released March 10, 2022. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
3.3
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0032
25th percentile
The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Security Fix(es): * grub2: Incorrect permission in grub.cfg allow unprivileged user to read the file content (CVE-2021-3981) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| grub-efi-amd64 · Ubuntu 20.04 LTS (focal) | 2.06-2ubuntu14.1 | grub-efi-amd64 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-amd64 · Ubuntu 22.04.1 LTS (jammy) | 2.06-2ubuntu14.1 | grub-efi-amd64 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-amd64-bin · Ubuntu 20.04 LTS (focal) | 2.06-2ubuntu14.1 | grub-efi-amd64-bin 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-amd64-bin · Ubuntu 22.04.1 LTS (jammy) | 2.06-2ubuntu14.1 | grub-efi-amd64-bin 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-amd64-signed · Ubuntu 20.04 LTS (focal) | 1.187.3~20.04.1+2.06-2ubuntu14.1 | grub-efi-amd64-signed 1.187.3~20.04.1+2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-amd64-signed · Ubuntu 22.04.1 LTS (jammy) | 1.187.3~22.04.1+2.06-2ubuntu14.1 | grub-efi-amd64-signed 1.187.3~22.04.1+2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64 · Ubuntu 20.04 LTS (focal) | 2.06-2ubuntu14.1 | grub-efi-arm64 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64 · Ubuntu 22.04.1 LTS (jammy) | 2.06-2ubuntu14.1 | grub-efi-arm64 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64-bin · Ubuntu 20.04 LTS (focal) | 2.06-2ubuntu14.1 | grub-efi-arm64-bin 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64-bin · Ubuntu 22.04.1 LTS (jammy) | 2.06-2ubuntu14.1 | grub-efi-arm64-bin 2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64-signed · Ubuntu 20.04 LTS (focal) | 1.187.3~20.04.1+2.06-2ubuntu14.1 | grub-efi-arm64-signed 1.187.3~20.04.1+2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub-efi-arm64-signed · Ubuntu 22.04.1 LTS (jammy) | 1.187.3~22.04.1+2.06-2ubuntu14.1 | grub-efi-arm64-signed 1.187.3~22.04.1+2.06-2ubuntu14.1 | Jul 19, 2023 |
| grub2 · Debian 12.15 (bookworm) | 2.06-8 | DEBIAN-CVE-2021-3981 | Mar 10, 2022 |
| grub2 · Debian 13.5 (trixie) | 2.06-8 | DEBIAN-CVE-2021-3981 | Mar 10, 2022 |
| grub2 · Debian 14 | 2.06-8 | DEBIAN-CVE-2021-3981 | Mar 10, 2022 |
| grub2 · rocky 8 | 1:2.02-123.el8 | RLSA-2022:2110 | May 10, 2022 |
| grub2-common · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-common · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-common · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-common · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-debugsource · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-aa64 · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64 · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64 · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-aa64 · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-aa64-cdboot · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64-cdboot · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64-cdboot · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-aa64-cdboot · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-aa64-ec2 · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-aa64-modules · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64-modules · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-aa64-modules · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-aa64-modules · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-ia32 · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32 · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32 · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-ia32-cdboot · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32-cdboot · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32-cdboot · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-ia32-modules · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32-modules · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-ia32-modules · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-x64 · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64 · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64 · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-x64 · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-x64-cdboot · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64-cdboot · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64-cdboot · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-x64-cdboot · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-efi-x64-ec2 · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-x64-modules · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64-modules · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-efi-x64-modules · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-efi-x64-modules · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-emu · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-emu-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-emu-modules · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-pc · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-pc · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-pc · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-pc · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-pc-modules · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-pc-modules · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-pc-modules · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-pc-modules · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-ppc64le · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-ppc64le · almalinux 8 | 1:2.02-123.el8_6.8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-ppc64le-modules · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-ppc64le-modules · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-tools · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-tools · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-tools · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-tools-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-efi · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-tools-efi · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-tools-efi · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-efi · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-tools-efi-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-extra · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-tools-extra · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-tools-extra · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-extra · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-tools-extra-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-minimal · RHEL 8 | 1:2.02-123.el8 | RHSA-2022:2110 | May 10, 2022 |
| grub2-tools-minimal · almalinux 8 | 1:2.02-123.el8.alma | ALSA-2022:2110 | May 10, 2022 |
| grub2-tools-minimal · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
| grub2-tools-minimal · ol 8 | 1:2.02-123.0.1.el8 | ELSA-2022-2110 | May 17, 2022 |
| grub2-tools-minimal-debuginfo · amzn 2023 | 1:2.06-61.amzn2023.0.3 | ALAS2023-2023-020 | Feb 17, 2023 |
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