CVE catalog
CVE-2026-29009
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow
- Severity
- Critical · CVSS 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.74% · Oct 25, 2026
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by returning multiple relative symlink targets that are appended without cumulative length validation. Attackers can send two or more READLINK responses containing relative symlink targets of approximately 1100 bytes each to corrupt adjacent BSS variables including nfs_server_ip, nfs_server_mount_port, nfs_server_port, nfs_our_port, nfs_state, and rpc_id, potentially achieving memory corruption and control over the NFS client state machine.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | u-boot | sid | 2025.01-3.2 | vulnerable |
| Debian | u-boot | forky | 2025.01-3.2 | vulnerable |
| Debian | u-boot | trixie | 2025.01-3+deb13u1 | vulnerable |
| Debian | u-boot | bookworm | 2023.01+dfsg-2+deb12u3 | vulnerable |
| Debian | u-boot | bookworm-security | 2023.01+dfsg-2+deb12u3 | vulnerable |
| Cpe | u-boot | Not reported | Not reported | vulnerable |
| Ubuntu | u-boot | pro | 2019.07+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | u-boot | pro | 2019.07+dfsg-1ubuntu5 | vulnerable |
| Ubuntu | u-boot | pro | 2019.07+dfsg-1ubuntu6 | vulnerable |
| Ubuntu | u-boot | pro | 2020.10+dfsg-1ubuntu0~20.04.2 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.1 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.3 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.4 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.5 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.6 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.6+esm1 | vulnerable |
| Ubuntu | u-boot | pro | 2021.01+dfsg-3ubuntu0~20.04.6+esm2 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2021.07+dfsg-0ubuntu8 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2021.07+dfsg-0ubuntu9 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2021.07+dfsg-0ubuntu10 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu1 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.1 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.3 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.4 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.5 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.6 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.7 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.8 | vulnerable |
| Ubuntu | u-boot | 22.04 | 2022.01+dfsg-2ubuntu2.9 | vulnerable |
| Ubuntu | u-boot-nezha | 22.04 | 2021.09+git20211008.62392d3-0ubuntu1 | vulnerable |
| Ubuntu | u-boot-nezha | 22.04 | 2022.04+git20220405.7446a472-0ubuntu0.1 | vulnerable |
| Ubuntu | u-boot-nezha | 22.04 | 2022.04+git20220405.7446a472-0ubuntu0.2 | vulnerable |
| Ubuntu | u-boot-nezha | 22.04 | 2022.04+git20220405.7446a472-0ubuntu0.3 | vulnerable |
| Ubuntu | u-boot-nezha | 22.04 | 2022.04+git20220405.7446a472-0ubuntu0.4 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2023.07+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu4 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu5 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu5.1 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2024.01+dfsg-1ubuntu5.2 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.01-0ubuntu0.24.04.1 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.01-0ubuntu0.24.04.2 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.10-0ubuntu0.24.04.1 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.10-0ubuntu0.24.04.2 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.10-0ubuntu0.24.04.3 | vulnerable |
| Ubuntu | u-boot | 24.04 | 2025.10-0ubuntu0.24.04.4 | vulnerable |
| Ubuntu | u-boot-nezha | 24.04 | 2022.10-1089-g528ae9bc6c-0ubuntu2 | vulnerable |
| Ubuntu | u-boot-nezha | 24.04 | 2024.01~rc1-190-g2e89b706f5-0ubuntu1 | vulnerable |
| Ubuntu | u-boot-nezha | 24.04 | 2024.01~rc1-190-g2e89b706f5-0ubuntu2 | vulnerable |
| Ubuntu | u-boot-nezha | 24.04 | 2024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2 | vulnerable |
| Ubuntu | u-boot | 25.10 | 2025.01-1~0ubuntu2 | vulnerable |
| Ubuntu | u-boot | 25.10 | 2025.01-3ubuntu1 | vulnerable |
| Ubuntu | u-boot | 25.10 | 2025.01-3ubuntu2 | vulnerable |
| Ubuntu | u-boot | 25.10 | 2025.01-3ubuntu4 | vulnerable |
| Ubuntu | u-boot | 25.10 | 2025.10-0ubuntu0.25.10.1 | vulnerable |
| Ubuntu | u-boot | 26.10 | 2025.10-0ubuntu2 | vulnerable |
| Ubuntu | u-boot | 26.10 | 2025.10-0ubuntu3 | vulnerable |
| Ubuntu | u-boot | 26.10 | 2025.10-0ubuntu4 | vulnerable |
| Ubuntu | u-boot | 26.10 | 2025.10-0ubuntu5 | vulnerable |
| Ubuntu | u-boot | 26.10 | 2025.10-0ubuntu6 | vulnerable |
| Ubuntu | u-boot | 26.04 | 2025.01-3ubuntu4 | vulnerable |
| Ubuntu | u-boot | 26.04 | 2025.10-0ubuntu1 | vulnerable |
| Ubuntu | u-boot | 26.04 | 2025.10-0ubuntu2 | vulnerable |
| Ubuntu | u-boot | 26.04 | 2025.10-0ubuntu2.1 | vulnerable |
| Ubuntu | u-boot | 26.04 | 2025.10-0ubuntu2.2 | vulnerable |
| Cpe | u-boot | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | u-boot | source | sid | (unfixed) | not yet assigned | Not reported | [1142070] |
| Debian | u-boot | source | forky | (unfixed) | not yet assigned | Not reported | [1142070] |
| Debian | u-boot | source | trixie | (unfixed) | not yet assigned | Not reported | [1142070] |
| Debian | u-boot | source | bookworm | (unfixed) | not yet assigned | Not reported | [1142070] |
Notes
[trixie] u-boot: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [u-boot-amlogic]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-mvebu]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-qcom]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-qemu]Affected
Source package: [u-boot]
Details (4)
2023.01+dfsg-2+deb12u3· all · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· all · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· all · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· all · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-rockchip]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-rpi]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-sunxi]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-tegra]Affected
Source package: [u-boot]
Details (2)
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
- [u-boot-tools]Affected
Source package: [u-boot]
Details (4)
2023.01+dfsg-2+deb12u3· amd64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookwormAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· amd64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
2023.01+dfsg-2+deb12u3· arm64 · bookworm-securityAffected
nvd · u-boot · debian · bookworm; nvd · u-boot · debian · 12
[Debian 13 (Trixie)]
- [u-boot-amlogic-binaries]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-asahi]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-mvebu]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-qcom]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-qemu]Affected
Source package: [u-boot]
Details (2)
2025.01-3· all · trixieAffected
nvd · u-boot · debian · 13
2025.01-3· all · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-rockchip]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-rpi]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-sitara-binaries]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-sunxi]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-tegra]Affected
Source package: [u-boot]
Details (1)
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
- [u-boot-tools]Affected
Source package: [u-boot]
Details (2)
2025.01-3· amd64 · trixieAffected
nvd · u-boot · debian · 13
2025.01-3· arm64 · trixieAffected
nvd · u-boot · debian · 13
Observed:
References
- [https://git.u-boot-project.org/u-boot/u-boot/-/commit/d6694018eaddefac6aae974f9cec72fd6e58f1bc]
- [https://git.u-boot-project.org/u-boot/u-boot/-/releases/v2026.07-rc2]
- [https://lists.denx.de/pipermail/u-boot/2026-May/617853.html]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-29009]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-29009]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-29009]
- [https://security-tracker.debian.org/tracker/CVE-2026-29009]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29009.json]
- [https://u-boot.org/]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2306.json]
- [https://www.vulncheck.com/advisories/u-boot-rc3-buffer-overflow-in-nfs-readlink-reply-via-nfs-readlink]
- [https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]