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[USN-8865-1] EDK II vulnerabilities

Posted on 05 October 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8865-1
October 05, 2026

edk2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in EDK II.

Software Description:
- edk2: UEFI firmware for virtual machines

Details:

It was discovered that EDK II incorrectly handled CMS key unwrapping in the
embedded OpenSSL library. An attacker could possibly use this issue to
cause a heap buffer overflow, resulting in a denial of service. This issue
only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu
24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-63072)

It was discovered that EDK II incorrectly handled CMP protection
verification in the embedded OpenSSL library. An attacker could possibly
use this issue to cause a denial of service. This issue only affected
Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-63076)

It was discovered that EDK II incorrectly buffered DTLS records in the
embedded OpenSSL library. A remote attacker could possibly use this issue
to cause EDK II to consume excessive memory, resulting in a denial of
service. (CVE-2026-54874)

It was discovered that EDK II incorrectly verified AEAD tags in the
embedded OpenSSL library. An attacker could possibly use this issue to
cause EDK II to accept forged messages. This issue only affected Ubuntu
24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-75803)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
ovmf 2025.11-3ubuntu7.3
qemu-efi-aarch64 2025.11-3ubuntu7.3

Ubuntu 24.04 LTS
ovmf 2024.02-2ubuntu0.10
qemu-efi-aarch64 2024.02-2ubuntu0.10

Ubuntu 22.04 LTS
ovmf 2022.02-3ubuntu0.22.04.7
qemu-efi 2022.02-3ubuntu0.22.04.7

Ubuntu 20.04 LTS
ovmf 0~20191122.bd85bf54-2ubuntu3.6+esm1
Available with Ubuntu Pro
qemu-efi 0~20191122.bd85bf54-2ubuntu3.6+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
ovmf 0~20180205.c0d9813c-2ubuntu0.3+esm3
Available with Ubuntu Pro
qemu-efi 0~20180205.c0d9813c-2ubuntu0.3+esm3
Available with Ubuntu Pro

Ubuntu 16.04 LTS
ovmf 0~20160408.ffea0a2c-2ubuntu0.2+esm4
Available with Ubuntu Pro
qemu-efi 0~20160408.ffea0a2c-2ubuntu0.2+esm4
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8865-1
CVE-2026-54874, CVE-2026-63072, CVE-2026-63076, CVE-2026-75803

Package Information:
https://launchpad.net/ubuntu/+source/edk2/2025.11-3ubuntu7.3
https://launchpad.net/ubuntu/+source/edk2/2024.02-2ubuntu0.10
https://launchpad.net/ubuntu/+source/edk2/2022.02-3ubuntu0.22.04.7

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