USN-8930-2

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Source
https://ubuntu.com/security/notices/USN-8930-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8930-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8930-2
Upstream
CVE (4)
Related
UBUNTU (4)
Published
2026-10-21T15:57:11Z
Modified
2026-10-21T23:13:03Z
Summary
u-boot vulnerabilities
Details

USN-8930-1 fixed some vulnerabilities in U-Boot. This update provides the corresponding fix for U-Boot on Ubuntu 26.10.

Original advisory details:

Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain NFS READ and NFS READLINK responses. An attacker could possibly use this issue to trigger a buffer overflow, resulting in a denial of service or arbitrary code execution. (CVE-2026-74220, CVE-2026-74221)

Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain HTTP data storage failures in its lwIP implementation. An attacker could possibly use this issue to trigger a use-after-free, resulting in a denial of service. (CVE-2026-74222)

Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot did not properly validate certain DHCPv6 option lengths during network boot. An attacker could possibly use this issue to trigger out-of-bounds memory access, resulting in a denial of service. (CVE-2026-74225)

References

Affected packages

Ubuntu:26.10 / u-boot

Package

Name
u-boot
Purl
pkg:deb/ubuntu/u-boot?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2025.10-0ubuntu6

Affected versions

2025.*
2025.10-0ubuntu2
2025.10-0ubuntu3
2025.10-0ubuntu4
2025.10-0ubuntu5

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "u-boot-amlogic",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-amlogic-binaries",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-asahi",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-exynos",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-exynos-binaries",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-imx",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-microchip",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-mvebu",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-omap",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-qcom",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-qemu",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-rockchip",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-rpi",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-sifive",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-sitara-binaries",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-starfive",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-stm32",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-sunxi",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-tegra",
            "binary_version":  "2025.10-0ubuntu6"
        },
        {
            "binary_name":  "u-boot-tools",
            "binary_version":  "2025.10-0ubuntu6"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-74220",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-74221",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-74222",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-74225",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8930-2.json"