USN-8930-2 (UBUNTU-CVE-2026-74220)

Vulnerability from osv_ubuntu – Published: 2026-10-21 15:57 – Updated: 2026-10-21 15:57 – Source website
VLAI
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
To clipboard 

{
  "affected": [
    {
      "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"
        }
      },
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "u-boot",
        "purl": "pkg:deb/ubuntu/u-boot@2025.10-0ubuntu6?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2025.10-0ubuntu6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2025.10-0ubuntu2",
        "2025.10-0ubuntu3",
        "2025.10-0ubuntu4",
        "2025.10-0ubuntu5"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8930-1 fixed some vulnerabilities in U-Boot. This update provides the\ncorresponding fix for U-Boot on Ubuntu 26.10.\n\nOriginal advisory details:\n\n Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot\nincorrectly handled certain NFS READ and NFS READLINK responses. An\nattacker could possibly use this issue to trigger a buffer overflow,\nresulting in a denial of service or arbitrary code execution.\n(CVE-2026-74220, CVE-2026-74221)\n\n Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot\nincorrectly handled certain HTTP data storage failures in its lwIP\nimplementation. An attacker could possibly use this issue to trigger a\nuse-after-free, resulting in a denial of service. (CVE-2026-74222)\n\n Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot did not\nproperly validate certain DHCPv6 option lengths during network boot. An\nattacker could possibly use this issue to trigger out-of-bounds memory\naccess, resulting in a denial of service. (CVE-2026-74225)",
  "id": "USN-8930-2",
  "modified": "2026-10-21T15:57:11Z",
  "published": "2026-10-21T15:57:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8930-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-74220"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-74221"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-74222"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-74225"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "u-boot vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-74220",
    "UBUNTU-CVE-2026-74221",
    "UBUNTU-CVE-2026-74222",
    "UBUNTU-CVE-2026-74225"
  ]
}



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