Vulnerability-Lookup

oesa-2026-2994

Vulnerability from osv_openeuler

Published

2026-07-19 11:11

Modified

2026-08-06 11:11

Summary

uboot-tools security update

Details

This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot's environment.

Security Fix(es):

U-Boot through 2026.04-rc3 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.(CVE-2026-29009)

Severity

8.2 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-29009	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "uboot-images-elf-2024.01-5.oe2403sp3.aarch64.rpm",
          "uboot-tools-2024.01-5.oe2403sp3.aarch64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp3.aarch64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "uboot-images-armv8-2024.01-5.oe2403sp3.noarch.rpm",
          "uboot-tools-help-2024.01-5.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "uboot-tools-2024.01-5.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "uboot-tools-2024.01-5.oe2403sp3.x86_64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp3.x86_64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "uboot-tools",
        "purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2024.01-5.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "uboot-images-elf-2024.01-5.oe2403sp4.aarch64.rpm",
          "uboot-tools-2024.01-5.oe2403sp4.aarch64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp4.aarch64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "uboot-images-armv8-2024.01-5.oe2403sp4.noarch.rpm",
          "uboot-tools-help-2024.01-5.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "uboot-tools-2024.01-5.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "uboot-tools-2024.01-5.oe2403sp4.x86_64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp4.x86_64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "uboot-tools",
        "purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2024.01-5.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "uboot-images-elf-2020.07-12.oe2003sp4.aarch64.rpm",
          "uboot-tools-2020.07-12.oe2003sp4.aarch64.rpm",
          "uboot-tools-debuginfo-2020.07-12.oe2003sp4.aarch64.rpm",
          "uboot-tools-debugsource-2020.07-12.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "uboot-images-armv8-2020.07-12.oe2003sp4.noarch.rpm",
          "uboot-tools-help-2020.07-12.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "uboot-tools-2020.07-12.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "uboot-tools-2020.07-12.oe2003sp4.x86_64.rpm",
          "uboot-tools-debuginfo-2020.07-12.oe2003sp4.x86_64.rpm",
          "uboot-tools-debugsource-2020.07-12.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "uboot-tools",
        "purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2020.07-12.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "uboot-images-elf-2021.10-13.oe2203sp4.aarch64.rpm",
          "uboot-tools-2021.10-13.oe2203sp4.aarch64.rpm",
          "uboot-tools-debuginfo-2021.10-13.oe2203sp4.aarch64.rpm",
          "uboot-tools-debugsource-2021.10-13.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "uboot-images-armv8-2021.10-13.oe2203sp4.noarch.rpm",
          "uboot-tools-help-2021.10-13.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "uboot-tools-2021.10-13.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "uboot-tools-2021.10-13.oe2203sp4.x86_64.rpm",
          "uboot-tools-debuginfo-2021.10-13.oe2203sp4.x86_64.rpm",
          "uboot-tools-debugsource-2021.10-13.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "uboot-tools",
        "purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2021.10-13.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "uboot-images-elf-2024.01-5.oe2403sp1.aarch64.rpm",
          "uboot-tools-2024.01-5.oe2403sp1.aarch64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp1.aarch64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "uboot-images-armv8-2024.01-5.oe2403sp1.noarch.rpm",
          "uboot-tools-help-2024.01-5.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "uboot-tools-2024.01-5.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "uboot-tools-2024.01-5.oe2403sp1.x86_64.rpm",
          "uboot-tools-debuginfo-2024.01-5.oe2403sp1.x86_64.rpm",
          "uboot-tools-debugsource-2024.01-5.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "uboot-tools",
        "purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2024.01-5.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot\u0026amp;apos;s environment.\r\n\r\nSecurity Fix(es):\n\nU-Boot through 2026.04-rc3 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.(CVE-2026-29009)",
  "id": "OESA-2026-2994",
  "modified": "2026-08-06T11:11:53Z",
  "published": "2026-07-19T11:11:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2994"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29009"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "uboot-tools security update",
  "upstream": [
    "CVE-2026-29009"
  ]
}

CVE-2026-29009 (GCVE-0-2026-29009)

Vulnerability from cvelistv5 – Published: 2026-07-08 16:16 – Updated: 2026-07-24 17:32 X_Open Source

Title

U-Boot < 2026.07-rc2 Buffer Overflow in nfs_readlink_reply() via NFS READLINK

Summary

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.

Severity

8.8 (High)


                        
                          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

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-08 16:36 UTC

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/	technical-descriptionexploit
https://lists.denx.de/pipermail/u-boot/2026-May/6…	issue-tracking
https://git.u-boot-project.org/u-boot/u-boot/-/re…	release-notes
https://git.u-boot-project.org/u-boot/u-boot/-/co…	patch
https://u-boot.org/
https://www.vulncheck.com/advisories/u-boot-rc3-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
u-boot	u-boot	Affected: 0 , < 2026.07-rc2 (custom) cpe:2.3:a:denx:u-boot::::::::

Date Public

2026-05-08 00:00

Credits

Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc. VulnCheck

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-29009",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T16:36:54.591359Z",
                "version": "2.0.3"
              },
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            }
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        "providerMetadata": {
          "dateUpdated": "2026-07-08T16:39:41.178Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/u-boot/u-boot",
          "product": "u-boot",
          "repo": "https://github.com/u-boot/u-boot",
          "vendor": "u-boot",
          "versions": [
            {
              "lessThan": "2026.07-rc2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "2026.07-rc2",
                  "vulnerable": true
                }
              ],
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc."
        },
        {
          "lang": "en",
          "type": "coordinator",
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        }
      ],
      "datePublic": "2026-05-08T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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              "value": "GENERAL"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "version": "3.1"
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          "scenarios": [
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      "problemTypes": [
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          "url": "https://lists.denx.de/pipermail/u-boot/2026-May/617853.html"
        },
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          ],
          "url": "https://git.u-boot-project.org/u-boot/u-boot/-/releases/v2026.07-rc2"
        },
        {
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        },
        {
          "name": "Project Webpage",
          "url": "https://u-boot.org/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/u-boot-rc3-buffer-overflow-in-nfs-readlink-reply-via-nfs-readlink"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "U-Boot \u003c 2026.07-rc2 Buffer Overflow in nfs_readlink_reply() via NFS READLINK",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-29009",
    "datePublished": "2026-07-08T16:16:04.460Z",
    "dateReserved": "2026-03-03T16:42:01.012Z",
    "dateUpdated": "2026-07-24T17:32:41.013Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.