# CVE-2021-38578: edk2-aarch64: edk2: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation [rhel-9.0]) CVE-2021-38578 is fixed in 10 products on 1 platform, first by ovmf 0~20180205.c0d9813c-2ubuntu0.3+esm2, released March 3, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2021-38578 - Priority: High - CVSS: 9.8 (IMPORTANT) - EPSS: 0.0102 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 3, 2022 ## Description edk2: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation [rhel-9.0]) ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | edk2 Debian 12.15 (bookworm) | 2022.11-1 | [DEBIAN-CVE-2021-38578](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38578.md) | Mar 3, 2022 | | Linux | edk2 Debian 13.5 (trixie) | 2022.11-1 | [DEBIAN-CVE-2021-38578](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38578.md) | Mar 3, 2022 | | Linux | edk2 Debian 14 | 2022.11-1 | [DEBIAN-CVE-2021-38578](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38578.md) | Mar 3, 2022 | | Linux | edk2-aarch64 RHEL 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [RHSA-2023:2165](https://patchblox.com/security/data/fix/linux/rhsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-aarch64 almalinux 9 | 20221207gitfff6d81270b5-9.el9_2 | [ALSA-2023:2165](https://patchblox.com/security/data/fix/linux/alsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-aarch64 ol 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [ELSA-2023-2165](https://patchblox.com/security/data/fix/linux/elsa-2023-2165.md) | May 15, 2023 | | Linux | edk2-ovmf RHEL 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [RHSA-2023:2165](https://patchblox.com/security/data/fix/linux/rhsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-ovmf almalinux 9 | 20221207gitfff6d81270b5-9.el9_2 | [ALSA-2023:2165](https://patchblox.com/security/data/fix/linux/alsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-ovmf ol 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [ELSA-2023-2165](https://patchblox.com/security/data/fix/linux/elsa-2023-2165.md) | May 15, 2023 | | Linux | edk2-tools RHEL 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [RHSA-2023:2165](https://patchblox.com/security/data/fix/linux/rhsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-tools almalinux 9 | 20221207gitfff6d81270b5-9.el9_2 | [ALSA-2023:2165](https://patchblox.com/security/data/fix/linux/alsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-tools ol 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [ELSA-2023-2165](https://patchblox.com/security/data/fix/linux/elsa-2023-2165.md) | May 15, 2023 | | Linux | edk2-tools-doc RHEL 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [RHSA-2023:2165](https://patchblox.com/security/data/fix/linux/rhsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-tools-doc almalinux 9 | 20221207gitfff6d81270b5-9.el9_2 | [ALSA-2023:2165](https://patchblox.com/security/data/fix/linux/alsa-2023-2165.md) | May 9, 2023 | | Linux | edk2-tools-doc ol 9 | 0:20221207gitfff6d81270b5-9.el9_2 | [ELSA-2023-2165](https://patchblox.com/security/data/fix/linux/elsa-2023-2165.md) | May 15, 2023 | | Linux | ovmf Ubuntu 18.04.6 LTS (bionic) | 0~20180205.c0d9813c-2ubuntu0.3+esm2 | [ovmf 0~20180205.c0d9813c-2ubuntu0.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovmf-0-20180205.c0d9813c-2ubuntu0.3-esm2.md) | Mar 3, 2022 | | Linux | ovmf Ubuntu 20.04 LTS (focal) | 0~20191122.bd85bf54-2ubuntu3.6 | [ovmf 0~20191122.bd85bf54-2ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ovmf-0-20191122.bd85bf54-2ubuntu3.6.md) | Mar 3, 2022 | | Linux | ovmf Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.3 | [ovmf 2022.02-3ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-2022.02-3ubuntu0.22.04.3.md) | Mar 3, 2022 | | Linux | ovmf-ia32 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.3 | [ovmf-ia32 2022.02-3ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-ia32-2022.02-3ubuntu0.22.04.3.md) | Mar 3, 2022 | | Linux | qemu-efi Ubuntu 18.04.6 LTS (bionic) | 0~20180205.c0d9813c-2ubuntu0.3+esm2 | [qemu-efi 0~20180205.c0d9813c-2ubuntu0.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-efi-0-20180205.c0d9813c-2ubuntu0.3-esm2.md) | Mar 3, 2022 | | Linux | qemu-efi Ubuntu 20.04 LTS (focal) | 0~20191122.bd85bf54-2ubuntu3.6 | [qemu-efi 0~20191122.bd85bf54-2ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-qemu-efi-0-20191122.bd85bf54-2ubuntu3.6.md) | Mar 3, 2022 | | Linux | qemu-efi Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.3 | [qemu-efi 2022.02-3ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-2022.02-3ubuntu0.22.04.3.md) | Mar 3, 2022 | | Linux | qemu-efi-aarch64 Ubuntu 18.04.6 LTS (bionic) | 0~20180205.c0d9813c-2ubuntu0.3+esm2 | [qemu-efi-aarch64 0~20180205.c0d9813c-2ubuntu0.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-efi-aarch64-0-20180205.c0d9813c-2ubuntu0.3-esm2.md) | Mar 3, 2022 | | Linux | qemu-efi-aarch64 Ubuntu 20.04 LTS (focal) | 0~20191122.bd85bf54-2ubuntu3.6 | [qemu-efi-aarch64 0~20191122.bd85bf54-2ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-qemu-efi-aarch64-0-20191122.bd85bf54-2ubuntu3.6.md) | Mar 3, 2022 | | Linux | qemu-efi-aarch64 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.3 | [qemu-efi-aarch64 2022.02-3ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-aarch64-2022.02-3ubuntu0.22.04.3.md) | Mar 3, 2022 | | Linux | qemu-efi-arm Ubuntu 18.04.6 LTS (bionic) | 0~20180205.c0d9813c-2ubuntu0.3+esm2 | [qemu-efi-arm 0~20180205.c0d9813c-2ubuntu0.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-efi-arm-0-20180205.c0d9813c-2ubuntu0.3-esm2.md) | Mar 3, 2022 | | Linux | qemu-efi-arm Ubuntu 20.04 LTS (focal) | 0~20191122.bd85bf54-2ubuntu3.6 | [qemu-efi-arm 0~20191122.bd85bf54-2ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-qemu-efi-arm-0-20191122.bd85bf54-2ubuntu3.6.md) | Mar 3, 2022 | | Linux | qemu-efi-arm Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.3 | [qemu-efi-arm 2022.02-3ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-arm-2022.02-3ubuntu0.22.04.3.md) | Mar 3, 2022 | --- Data as of 2026-11-11T07:45:43Z UTC. 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