HighFix available
u-boot, u-boot-nezha — security advisory
U-Boot before 2026.10-rc5 contains out-of-bounds memory access in dhcp6_parse_options() that fails to validate SERVERID and CLIENTID option lengths from DHCPv6 packets. Attackers on the local network can send crafted DHCPv6 ADVERTISE or REPLY packets during netboot to corrupt memory and crash the bootloader.
- Products
- u-boot, u-boot-nezha
- Affected versions
- 2021.09+git20211008.62392d3-0ubuntu1, 2022.04+git20220405.7446a472-0ubuntu0.1, 2022.04+git20220405.7446a472-0ubuntu0.2, 2022.04+git20220405.7446a472-0ubuntu0.3, 2022.04+git20220405.7446a472-0ubuntu0.4, 2022.10-1089-g528ae9bc6c-0ubuntu2, 2023.07+dfsg-1ubuntu2, 2024.01+dfsg-1ubuntu1, 2024.01+dfsg-1ubuntu2, 2024.01+dfsg-1ubuntu3, 2024.01+dfsg-1ubuntu4, 2024.01+dfsg-1ubuntu5, 2024.01+dfsg-1ubuntu5.1, 2024.01+dfsg-1ubuntu5.2, 2024.01~rc1-190-g2e89b706f5-0ubuntu1, 2024.01~rc1-190-g2e89b706f5-0ubuntu2, 2024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2, 2025.01-0ubuntu0.24.04.1, 2025.01-0ubuntu0.24.04.2, 2025.01-3ubuntu4, 2025.10-0ubuntu0.24.04.1, 2025.10-0ubuntu0.24.04.2, 2025.10-0ubuntu0.24.04.3, 2025.10-0ubuntu1, 2025.10-0ubuntu2, 2025.10-0ubuntu2.1, 2025.10-0ubuntu3, 2025.10-0ubuntu4, 2025.10-0ubuntu5
- Fixed versions
- 2025.10-0ubuntu0.24.04.4, 2025.10-0ubuntu2.2, 2025.10-0ubuntu6
- CVEs
- CVE-2026-74225
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 16:39 UTC · Revision 1
Source evidence
U-Boot before 2026.10-rc5 contains out-of-bounds memory access in dhcp6_parse_options() that fails to validate SERVERID and CLIENTID option lengths from DHCPv6 packets. Attackers on the local network can send crafted DHCPv6 ADVERTISE or REPLY packets during netboot to corrupt memory and crash the bootloader.
osv:UBUNTU-CVE-2026-74225
u-boot-nezha
Fixed versions: Not specified
u-boot
Fixed versions: 2025.10-0ubuntu0.24.04.4
u-boot-nezha
Fixed versions: Not specified
u-boot
Fixed versions: 2025.10-0ubuntu6
u-boot
Fixed versions: 2025.10-0ubuntu2.2
Complete source record
{
"id": "5a132c3f92a9ef7df1bb5091453eef3aa3964e861567cc4fbbd006043a47a0a5",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-74225",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-74225",
"summary": "U-Boot before 2026.10-rc5 contains out-of-bounds memory access in dhcp6_parse_options() that fails to validate SERVERID and CLIENTID option lengths from DHCPv6 packets. Attackers on the local network can send crafted DHCPv6 ADVERTISE or REPLY packets during netboot to corrupt memory and crash the bootloader.",
"evidence": "osv:UBUNTU-CVE-2026-74225",
"products": [
{
"name": {
"value": "u-boot-nezha",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2021.09+git20211008.62392d3-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "2022.04+git20220405.7446a472-0ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2022.04+git20220405.7446a472-0ubuntu0.2",
"evidence": "/affected/0/versions"
},
{
"value": "2022.04+git20220405.7446a472-0ubuntu0.3",
"evidence": "/affected/0/versions"
},
{
"value": "2022.04+git20220405.7446a472-0ubuntu0.4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "u-boot",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2025.10-0ubuntu0.24.04.4",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "2023.07+dfsg-1ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu4",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu5",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu5.1",
"evidence": "/affected/1/versions"
},
{
"value": "2024.01+dfsg-1ubuntu5.2",
"evidence": "/affected/1/versions"
},
{
"value": "2025.01-0ubuntu0.24.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "2025.01-0ubuntu0.24.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "2025.10-0ubuntu0.24.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "2025.10-0ubuntu0.24.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "2025.10-0ubuntu0.24.04.3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "u-boot-nezha",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2022.10-1089-g528ae9bc6c-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2024.01~rc1-190-g2e89b706f5-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2024.01~rc1-190-g2e89b706f5-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "u-boot",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2025.10-0ubuntu6",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "2025.10-0ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "2025.10-0ubuntu3",
"evidence": "/affected/3/versions"
},
{
"value": "2025.10-0ubuntu4",
"evidence": "/affected/3/versions"
},
{
"value": "2025.10-0ubuntu5",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "u-boot",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2025.10-0ubuntu2.2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "2025.01-3ubuntu4",
"evidence": "/affected/4/versions"
},
{
"value": "2025.10-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2025.10-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "2025.10-0ubuntu2.1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-74225",
"aliases": [
"UBUNTU-CVE-2026-74225"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"
},
{
"type": "CVSS_V4",
"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": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "u-boot-nezha",
"purl": "pkg:deb/ubuntu/u-boot-nezha?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2021.09+git20211008.62392d3-0ubuntu1",
"2022.04+git20220405.7446a472-0ubuntu0.1",
"2022.04+git20220405.7446a472-0ubuntu0.2",
"2022.04+git20220405.7446a472-0ubuntu0.3",
"2022.04+git20220405.7446a472-0ubuntu0.4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-74225.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "u-boot-nezha",
"binary_version": "2022.04+git20220405.7446a472-0ubuntu0.4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2025.10-0ubuntu0.24.04.4"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/ubuntu/u-boot?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2023.07+dfsg-1ubuntu2",
"2024.01+dfsg-1ubuntu1",
"2024.01+dfsg-1ubuntu2",
"2024.01+dfsg-1ubuntu3",
"2024.01+dfsg-1ubuntu4",
"2024.01+dfsg-1ubuntu5",
"2024.01+dfsg-1ubuntu5.1",
"2024.01+dfsg-1ubuntu5.2",
"2025.01-0ubuntu0.24.04.1",
"2025.01-0ubuntu0.24.04.2",
"2025.10-0ubuntu0.24.04.1",
"2025.10-0ubuntu0.24.04.2",
"2025.10-0ubuntu0.24.04.3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-74225.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "u-boot-amlogic",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-amlogic-binaries",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-asahi",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-exynos",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-exynos-binaries",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-imx",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-microchip",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-mvebu",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-omap",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-qcom",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-qemu",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-rockchip",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-rpi",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-sifive",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-sitara-binaries",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-starfive",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-stm32",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-sunxi",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-tegra",
"binary_version": "2025.10-0ubuntu0.24.04.4"
},
{
"binary_name": "u-boot-tools",
"binary_version": "2025.10-0ubuntu0.24.04.4"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "u-boot-nezha",
"purl": "pkg:deb/ubuntu/u-boot-nezha?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2022.10-1089-g528ae9bc6c-0ubuntu2",
"2024.01~rc1-190-g2e89b706f5-0ubuntu1",
"2024.01~rc1-190-g2e89b706f5-0ubuntu2",
"2024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-74225.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "u-boot-nezha",
"binary_version": "2024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2025.10-0ubuntu6"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/ubuntu/u-boot?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2025.10-0ubuntu2",
"2025.10-0ubuntu3",
"2025.10-0ubuntu4",
"2025.10-0ubuntu5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-74225.json"
},
"ecosystem_specific": {
"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"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2025.10-0ubuntu2.2"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/ubuntu/u-boot?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"2025.01-3ubuntu4",
"2025.10-0ubuntu1",
"2025.10-0ubuntu2",
"2025.10-0ubuntu2.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-74225.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "u-boot-amlogic",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-amlogic-binaries",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-asahi",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-exynos",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-exynos-binaries",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-imx",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-microchip",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-mvebu",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-omap",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-qcom",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-qemu",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-rockchip",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-rpi",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-sifive",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-sitara-binaries",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-starfive",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-stm32",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-sunxi",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-tegra",
"binary_version": "2025.10-0ubuntu2.2"
},
{
"binary_name": "u-boot-tools",
"binary_version": "2025.10-0ubuntu2.2"
}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-21T23:11:56.250830371Z",
"provider": "osv",
"upstream": [
"CVE-2026-74225"
],
"references": [
"https://ubuntu.com/security/CVE-2026-74225",
"https://www.cve.org/CVERecord?id=CVE-2026-74225",
"https://github.com/u-boot/u-boot",
"https://github.com/u-boot/u-boot/blob/v2026.07/net/dhcpv6.c#L304",
"https://github.com/u-boot/u-boot/commit/20209a62bc8565fc1e040882bc03c71ff0d73076",
"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-out-of-bounds-write-via-dhcpv6",
"https://ubuntu.com/security/notices/USN-8930-1",
"https://ubuntu.com/security/notices/USN-8930-2"
]
},
"related_cves": [
{
"value": "CVE-2026-74225",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 401078,
"published_at": "2026-09-29T22:18:00+00:00"
}