{"id":"USN-8930-1","summary":"u-boot vulnerabilities","details":"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\nShahriyar 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. This issue only\naffected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-74222)\n\nShahriyar 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. This issue only affected\nUbuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-74225)","modified":"2026-10-17T13:11:53.933670443Z","published":"2026-10-14T16:23:58Z","related":["UBUNTU-CVE-2026-74220","UBUNTU-CVE-2026-74221","UBUNTU-CVE-2026-74222","UBUNTU-CVE-2026-74225"],"upstream":["CVE-2026-74220","CVE-2026-74221","CVE-2026-74222","CVE-2026-74225","UBUNTU-CVE-2026-74220","UBUNTU-CVE-2026-74221","UBUNTU-CVE-2026-74222","UBUNTU-CVE-2026-74225"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8930-1"},{"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"}],"affected":[{"package":{"name":"u-boot","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/u-boot?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2016.01+dfsg1-2ubuntu5+esm2"}]}],"versions":["2015.04+dfsg1-2ubuntu1","2015.10+dfsg1-2","2015.10+dfsg1-3","2015.10+dfsg1-4","2016.01+dfsg1-1","2016.01+dfsg1-1ubuntu1","2016.01+dfsg1-2ubuntu1","2016.01+dfsg1-2ubuntu2","2016.01+dfsg1-2ubuntu3","2016.01+dfsg1-2ubuntu5","2016.01+dfsg1-2ubuntu5+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_version":"2016.01+dfsg1-2ubuntu5+esm2","binary_name":"u-boot"},{"binary_name":"u-boot-exynos","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"},{"binary_name":"u-boot-imx","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"},{"binary_name":"u-boot-omap","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"},{"binary_version":"2016.01+dfsg1-2ubuntu5+esm2","binary_name":"u-boot-rockchip"},{"binary_version":"2016.01+dfsg1-2ubuntu5+esm2","binary_name":"u-boot-rpi"},{"binary_name":"u-boot-sunxi","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"},{"binary_name":"u-boot-tegra","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"},{"binary_name":"u-boot-tools","binary_version":"2016.01+dfsg1-2ubuntu5+esm2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"CVSS_V4","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":"Ubuntu","score":"medium"}],"id":"CVE-2026-74220"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"CVSS_V4","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"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-74221"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8930-1.json"}},{"package":{"name":"u-boot","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/u-boot?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2020.10+dfsg-1ubuntu0~18.04.3+esm2"}]}],"versions":["2016.03+dfsg1-6ubuntu2","2018.07~rc3+dfsg1-0ubuntu1~18.04.1","2018.07~rc3+dfsg1-0ubuntu2~18.04.1","2018.07~rc3+dfsg1-0ubuntu3~18.04.1","2019.07+dfsg-1ubuntu4~18.04.1","2020.10+dfsg-1ubuntu0~18.04.2","2020.10+dfsg-1ubuntu0~18.04.3","2020.10+dfsg-1ubuntu0~18.04.3+esm1"],"ecosystem_specific":{"availability":"Available 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with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"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"},{"type":"CVSS_V4","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"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"CVSS_V4","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":"Ubuntu","score":"medium"}],"id":"CVE-2026-74221"}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8930-1.json"}},{"package":{"name":"u-boot","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/u-boot?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2022.01+dfsg-2ubuntu2.9"}]}],"versions":["2021.07+dfsg-0ubuntu8","2021.07+dfsg-0ubuntu9","2021.07+dfsg-0ubuntu10","2022.01+dfsg-2ubuntu1","2022.01+dfsg-2ubuntu2","2022.01+dfsg-2ubuntu2.1","2022.01+dfsg-2ubuntu2.3","2022.01+dfsg-2ubuntu2.4","2022.01+dfsg-2ubuntu2.5","2022.01+dfsg-2ubuntu2.6","2022.01+dfsg-2ubuntu2.7","2022.01+dfsg-2ubuntu2.8"],"ecosystem_specific":{"binaries":[{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot"},{"binary_name":"u-boot-amlogic","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_name":"u-boot-exynos","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_name":"u-boot-imx","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-microchip"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-mvebu"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-omap"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-qcom"},{"binary_name":"u-boot-qemu","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_name":"u-boot-rockchip","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-rpi"},{"binary_name":"u-boot-sifive","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_version":"2022.01+dfsg-2ubuntu2.9","binary_name":"u-boot-sunxi"},{"binary_name":"u-boot-tegra","binary_version":"2022.01+dfsg-2ubuntu2.9"},{"binary_name":"u-boot-tools","binary_version":"2022.01+dfsg-2ubuntu2.9"}],"availability":"No 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