Vulnerability-Lookup

GHSA-QF6R-CRJW-4C6M

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-28 09:31

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Validate node_id in arena_alloc_pages()

arena_alloc_pages() accepts a plain int node_id and forwards it through the entire allocation chain without any bounds checking.

Validate node_id before passing it down the allocation chain in arena_alloc_pages().

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53031"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:14Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Validate node_id in arena_alloc_pages()\n\narena_alloc_pages() accepts a plain int node_id and forwards it through\nthe entire allocation chain without any bounds checking.\n\nValidate node_id before passing it down the allocation chain in\narena_alloc_pages().",
  "id": "GHSA-qf6r-crjw-4c6m",
  "modified": "2026-06-28T09:31:39Z",
  "published": "2026-06-24T18:32:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53031"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2845989f2ebaf7848e4eccf9a779daf3156ea0a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31d3b4b28e55835646d6829d60023f730dd34e85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e15900888c09480a4c632bc598f1c5bd39bed6d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb66e20130f95a93ffea1677252526a9e39170b2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53031 (GCVE-0-2026-53031)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-08-05 12:32

Title

bpf: Validate node_id in arena_alloc_pages()

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate node_id in arena_alloc_pages() arena_alloc_pages() accepts a plain int node_id and forwards it through the entire allocation chain without any bounds checking. Validate node_id before passing it down the allocation chain in arena_alloc_pages().

Severity

7.8 (High)


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

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/31d3b4b28e5583564…
https://git.kernel.org/stable/c/e15900888c09480a4…
https://git.kernel.org/stable/c/fb66e20130f95a93f…
https://git.kernel.org/stable/c/2845989f2ebaf7848…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 317460317a02a1af512697e6e964298dedd8a163 , < 31d3b4b28e55835646d6829d60023f730dd34e85 (git) Affected: 317460317a02a1af512697e6e964298dedd8a163 , < e15900888c09480a4c632bc598f1c5bd39bed6d6 (git) Affected: 317460317a02a1af512697e6e964298dedd8a163 , < fb66e20130f95a93ffea1677252526a9e39170b2 (git) Affected: 317460317a02a1af512697e6e964298dedd8a163 , < 2845989f2ebaf7848e4eccf9a779daf3156ea0a5 (git)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/arena.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "31d3b4b28e55835646d6829d60023f730dd34e85",
              "status": "affected",
              "version": "317460317a02a1af512697e6e964298dedd8a163",
              "versionType": "git"
            },
            {
              "lessThan": "e15900888c09480a4c632bc598f1c5bd39bed6d6",
              "status": "affected",
              "version": "317460317a02a1af512697e6e964298dedd8a163",
              "versionType": "git"
            },
            {
              "lessThan": "fb66e20130f95a93ffea1677252526a9e39170b2",
              "status": "affected",
              "version": "317460317a02a1af512697e6e964298dedd8a163",
              "versionType": "git"
            },
            {
              "lessThan": "2845989f2ebaf7848e4eccf9a779daf3156ea0a5",
              "status": "affected",
              "version": "317460317a02a1af512697e6e964298dedd8a163",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/arena.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Validate node_id in arena_alloc_pages()\n\narena_alloc_pages() accepts a plain int node_id and forwards it through\nthe entire allocation chain without any bounds checking.\n\nValidate node_id before passing it down the allocation chain in\narena_alloc_pages()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - An attacker must use local BPF syscalls to create/use a BPF arena map and load/execute a BPF program that calls the arena kfunc. The vulnerable path is not reachable directly from network, adjacent, or physical input.\nAC:L - The attacker directly controls the `node_id` argument passed to `bpf_arena_alloc_pages()` and can repeatedly trigger the BPF program. No race or external condition is required.\nPR:L - Using BPF arena requires BPF privileges (`CAP_BPF` and `CAP_PERFMON`) or a delegated BPF token, which can be available to a namespaced/container user in a reasonable deployment. Under the required higher-severity tie-break rule, this is scored as low rather than high privilege.\nUI:N - No victim action is required after the attacker has local ability to load and run the BPF program. The attacker can trigger the kfunc directly through BPF execution.\nS:U - The vulnerable component and impacted resource are both the local kernel. This is standard local kernel compromise/DoS scope, not a VM or hardware boundary crossing.\nC:H - The unchecked `node_id` flows into NUMA allocator metadata lookup (`NODE_DATA`/zonelists), creating out-of-bounds or invalid kernel memory access rather than a bounded harmless failure. Under the higher-severity rule, allocator metadata misuse is treated as potentially enabling high-impact information disclosure.\nI:H - Invalid NUMA allocator state can cause the page allocator to operate on bogus per-node/zone structures, which can plausibly corrupt kernel allocator state. Under the higher-severity rule, this is scored as potential high-integrity kernel memory corruption.\nA:H - Invalid negative, out-of-range, or offline node IDs can hit allocator assertions, NULL/invalid dereferences, or corrupted zonelist traversal, causing an oops/panic. The attacker can trigger this repeatedly from the malicious BPF program."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:32:45.100Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/31d3b4b28e55835646d6829d60023f730dd34e85"
        },
        {
          "url": "https://git.kernel.org/stable/c/e15900888c09480a4c632bc598f1c5bd39bed6d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb66e20130f95a93ffea1677252526a9e39170b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/2845989f2ebaf7848e4eccf9a779daf3156ea0a5"
        }
      ],
      "title": "bpf: Validate node_id in arena_alloc_pages()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53031",
    "datePublished": "2026-06-24T16:29:39.043Z",
    "dateReserved": "2026-06-09T07:44:35.380Z",
    "dateUpdated": "2026-08-05T12:32:45.100Z",
    "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.

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.
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GHSA-QF6R-CRJW-4C6M

CVE-2026-53031 (GCVE-0-2026-53031)

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