UBUNTU-CVE-2026-97631

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Source
https://ubuntu.com/security/CVE-2026-97631
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-97631
Upstream
  • CVE-2026-97631
Published
2026-10-27T00:00:00Z
Modified
2026-10-28T01:09:12Z
Severity
  • 9.5 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds Write”, Classic Buffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of this vulnerability can lead to arbitrary code execution. It could also impact Confidentiality, Integrity, and Availability.

References

Affected packages

Ubuntu:22.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2021.*
2021.08~rc0-2
2021.08-3
2021.11~rc1-1
2021.11-1
2021.11-2
2022.*
2022.02~rc1-1
2022.02~rc1-1ubuntu1
2022.02-1
2022.02-2
2022.02-3
2022.02-3ubuntu0.22.04.1
2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.3
2022.02-3ubuntu0.22.04.4
2022.02-3ubuntu0.22.04.5
2022.02-3ubuntu0.22.04.6
2022.02-3ubuntu0.22.04.7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "ovmf",
            "binary_version":  "2022.02-3ubuntu0.22.04.7"
        },
        {
            "binary_name":  "ovmf-ia32",
            "binary_version":  "2022.02-3ubuntu0.22.04.7"
        },
        {
            "binary_name":  "qemu-efi",
            "binary_version":  "2022.02-3ubuntu0.22.04.7"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "2022.02-3ubuntu0.22.04.7"
        },
        {
            "binary_name":  "qemu-efi-arm",
            "binary_version":  "2022.02-3ubuntu0.22.04.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:24.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2023.*
2023.05-2
2023.11-2
2023.11-3
2023.11-4
2023.11-5
2023.11-6
2023.11-8
2024.*
2024.02-1
2024.02-2
2024.02-2ubuntu0.1
2024.02-2ubuntu0.3
2024.02-2ubuntu0.4
2024.02-2ubuntu0.5
2024.02-2ubuntu0.6
2024.02-2ubuntu0.7
2024.02-2ubuntu0.8
2024.02-2ubuntu0.9
2024.02-2ubuntu0.10

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "efi-shell-aa64",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "efi-shell-arm",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "efi-shell-ia32",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "efi-shell-riscv64",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "efi-shell-x64",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "ovmf",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "ovmf-ia32",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "ovmf-legacy",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "qemu-efi-arm",
            "binary_version":  "2024.02-2ubuntu0.10"
        },
        {
            "binary_name":  "qemu-efi-riscv64",
            "binary_version":  "2024.02-2ubuntu0.10"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:26.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2025.*
2025.02-8ubuntu3
2025.11-3ubuntu6
2025.11-3ubuntu7
2025.11-3ubuntu7.2
2025.11-3ubuntu7.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "efi-shell-aa64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "efi-shell-loongarch64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "efi-shell-riscv64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "efi-shell-x64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "ovmf",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "ovmf-amdsev",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "ovmf-generic",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "ovmf-inteltdx",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "ovmf-legacy",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "qemu-efi-loongarch64",
            "binary_version":  "2025.11-3ubuntu7.3"
        },
        {
            "binary_name":  "qemu-efi-riscv64",
            "binary_version":  "2025.11-3ubuntu7.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
edk2-hwe

Package

Name
edk2-hwe
Purl
pkg:deb/ubuntu/edk2-hwe?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2025.*
2025.11-3ubuntu6
2025.11-3ubuntu8
2025.11-3ubuntu8.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "efi-shell-aa64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "efi-shell-loongarch64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "efi-shell-riscv64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "efi-shell-x64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "ovmf-amdsev-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "ovmf-generic-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "ovmf-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "ovmf-inteltdx-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "ovmf-legacy-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "qemu-efi-aarch64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "qemu-efi-loongarch64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        },
        {
            "binary_name":  "qemu-efi-riscv64-hwe",
            "binary_version":  "2025.11-3ubuntu8.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:26.10
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2025.*
2025.11-3ubuntu7
2025.11-3ubuntu8
2026.*
2026.05-2ubuntu1
2026.05-2ubuntu2
2026.05-2ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "efi-shell-aa64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-loongarch64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-riscv64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-x64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-amdsev",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-generic",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-inteltdx",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-legacy",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-loongarch64",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-riscv64",
            "binary_version":  "2026.05-2ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
edk2-hwe

Package

Name
edk2-hwe
Purl
pkg:deb/ubuntu/edk2-hwe?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2025.*
2025.11-3ubuntu8
2025.11-3ubuntu9
2026.*
2026.05-2ubuntu1
2026.05-2ubuntu2
2026.05-2ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "efi-shell-aa64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-loongarch64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-riscv64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "efi-shell-x64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-amdsev-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-generic-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-inteltdx-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "ovmf-legacy-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-aarch64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-loongarch64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        },
        {
            "binary_name":  "qemu-efi-riscv64-hwe",
            "binary_version":  "2026.05-2ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:Pro:16.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0~20150106.*
0~20150106.5c2d456b-2
0~20160104.*
0~20160104.c2a892d7-1
0~20160408.*
0~20160408.ffea0a2c-2
0~20160408.ffea0a2c-2ubuntu0.1
0~20160408.ffea0a2c-2ubuntu0.2
0~20160408.ffea0a2c-2ubuntu0.2+esm1
0~20160408.ffea0a2c-2ubuntu0.2+esm3
0~20160408.ffea0a2c-2ubuntu0.2+esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "ovmf",
            "binary_version":  "0~20160408.ffea0a2c-2ubuntu0.2+esm4"
        },
        {
            "binary_name":  "qemu-efi",
            "binary_version":  "0~20160408.ffea0a2c-2ubuntu0.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:Pro:18.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0~20170911.*
0~20170911.5dfba97c-1
0~20171010.*
0~20171010.234dbcef-1
0~20171027.*
0~20171027.76fd5a66-1
0~20171205.*
0~20171205.a9212288-1
0~20180105.*
0~20180105.0bc94c74-1
0~20180205.*
0~20180205.c0d9813c-1
0~20180205.c0d9813c-2
0~20180205.c0d9813c-2ubuntu0.1
0~20180205.c0d9813c-2ubuntu0.2
0~20180205.c0d9813c-2ubuntu0.3
0~20180205.c0d9813c-2ubuntu0.3+esm1
0~20180205.c0d9813c-2ubuntu0.3+esm2
0~20180205.c0d9813c-2ubuntu0.3+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "ovmf",
            "binary_version":  "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
            "binary_name":  "qemu-efi",
            "binary_version":  "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
            "binary_name":  "qemu-efi-arm",
            "binary_version":  "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"
Ubuntu:Pro:20.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0~20190606.*
0~20190606.20d2e5a1-2ubuntu1
0~20190828.*
0~20190828.37eef910-3
0~20190828.37eef910-4
0~20191122.*
0~20191122.bd85bf54-1
0~20191122.bd85bf54-1ubuntu1
0~20191122.bd85bf54-2
0~20191122.bd85bf54-2ubuntu1
0~20191122.bd85bf54-2ubuntu2
0~20191122.bd85bf54-2ubuntu3
0~20191122.bd85bf54-2ubuntu3.1
0~20191122.bd85bf54-2ubuntu3.2
0~20191122.bd85bf54-2ubuntu3.3
0~20191122.bd85bf54-2ubuntu3.4
0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.6
0~20191122.bd85bf54-2ubuntu3.6+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "ovmf",
            "binary_version":  "0~20191122.bd85bf54-2ubuntu3.6+esm1"
        },
        {
            "binary_name":  "qemu-efi",
            "binary_version":  "0~20191122.bd85bf54-2ubuntu3.6+esm1"
        },
        {
            "binary_name":  "qemu-efi-aarch64",
            "binary_version":  "0~20191122.bd85bf54-2ubuntu3.6+esm1"
        },
        {
            "binary_name":  "qemu-efi-arm",
            "binary_version":  "0~20191122.bd85bf54-2ubuntu3.6+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97631.json"