Vulnerability-Lookup

GHSA-8V6P-QX2G-G6V4

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

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

octeontx2-af: Validate NIX maximum LFs correctly

NIX maximum number of LFs can be set via devlink command but that can be done before assigning any LFs to a PF/VF. The condition used to check whether any LFs are assigned is incorrect. This patch fixes that condition.

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-2026-72410"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:14Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: Validate NIX maximum LFs correctly\n\nNIX maximum number of LFs can be set via devlink command\nbut that can be done before assigning any LFs to a PF/VF.\nThe condition used to check whether any LFs are assigned is\nincorrect. This patch fixes that condition.",
  "id": "GHSA-8v6p-qx2g-g6v4",
  "modified": "2026-08-17T06:33:28Z",
  "published": "2026-08-15T06:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72410"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa"
    }
  ],
  "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-2026-72410 (GCVE-0-2026-72410)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:43

Title

octeontx2-af: Validate NIX maximum LFs correctly

Summary

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Validate NIX maximum LFs correctly NIX maximum number of LFs can be set via devlink command but that can be done before assigning any LFs to a PF/VF. The condition used to check whether any LFs are assigned is incorrect. This patch fixes that condition.

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

References

4 references

URL	Tags
https://git.kernel.org/stable/c/0933fe0130eb71af0…
https://git.kernel.org/stable/c/e0ac054416bf4e913…
https://git.kernel.org/stable/c/b1f6381acf9d55fab…
https://git.kernel.org/stable/c/1576d12a39860418d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < 0933fe0130eb71af0c3ab481b40f543b458a8c54 (git) Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < e0ac054416bf4e913fe96cefefe94e3331bbe6fa (git) Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < b1f6381acf9d55fab208e8b4c252a5a671820bd9 (git) Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < 1576d12a39860418d6a68b402fda71a48f04a57c (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0933fe0130eb71af0c3ab481b40f543b458a8c54",
              "status": "affected",
              "version": "dd7842878633453e38d6a4927593dd28b9d8ab91",
              "versionType": "git"
            },
            {
              "lessThan": "e0ac054416bf4e913fe96cefefe94e3331bbe6fa",
              "status": "affected",
              "version": "dd7842878633453e38d6a4927593dd28b9d8ab91",
              "versionType": "git"
            },
            {
              "lessThan": "b1f6381acf9d55fab208e8b4c252a5a671820bd9",
              "status": "affected",
              "version": "dd7842878633453e38d6a4927593dd28b9d8ab91",
              "versionType": "git"
            },
            {
              "lessThan": "1576d12a39860418d6a68b402fda71a48f04a57c",
              "status": "affected",
              "version": "dd7842878633453e38d6a4927593dd28b9d8ab91",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: Validate NIX maximum LFs correctly\n\nNIX maximum number of LFs can be set via devlink command\nbut that can be done before assigning any LFs to a PF/VF.\nThe condition used to check whether any LFs are assigned is\nincorrect. This patch fixes that condition."
        }
      ],
      "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 - The flaw is reached only via DEVLINK_CMD_PARAM_SET netlink to the octeontx2-af RVU Admin Function devlink \"nix_maxlf\" parameter; there is no remote packet, mbox, or ioctl path into rvu_af_dl_nix_maxlf_validate()/set().\nAC:L - A CAP_NET_ADMIN caller can deterministically attach NIX LFs (PF/VF netdev probe) and issue the devlink set in the window before MCAM entries are allocated; the buggy mcam-\u003ebmap_fcnt check is bypassed whenever LFs are assigned but the MCAM bitmap is still full.\nPR:L - DEVLINK_CMD_PARAM_SET requires GENL_ADMIN_PERM (CAP_NET_ADMIN). On OcteonTX2 cloud/edge servers the AF devlink is host-local admin surface reachable by any principal holding netdev admin capability, including container runtimes granted CAP_NET_ADMIN.\nUI:N - Exploitation is fully programmatic via devlink netlink and concurrent netdev bringup; no victim click, mount, or other interactive action is required beyond the attacker\u0027s own administrative commands.\nS:U - Impact is confined to kernel/AF driver state on the host managing the Marvell OcteonTX2 NIC; it does not cross a VM-hypervisor, IOMMU, or container sandbox boundary to compromise a separate security authority.\nC:H - Bypassing validation lets rvu_af_dl_nix_maxlf_set() change block-\u003elf.max while LFs remain assigned, tear down MCAM tracking via npc_mcam_rsrcs_deinit(), and reinit with wrong nixlf_count, desynchronizing MCAM index math and enabling out-of-bounds reads of kmalloc\u0027d MCAM metadata.\nI:H - The same desync corrupts MCAM entry2pfvf_map/entry2cntr_map bookkeeping and NIX LF resource maps while hardware LFs stay attached, giving attacker-influenced out-of-bounds writes during subsequent MCAM/NIX operations and a plausible path to kernel code execution.\nA:H - Forcing MCAM reinitialization and inconsistent LF limits on an active OcteonTX2 AF can panic/oops the kernel or wedge NIC packet processing on internet-facing servers and telco/cloud nodes that depend on this hardware for line-rate networking."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:43:50.739Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9"
        },
        {
          "url": "https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c"
        }
      ],
      "title": "octeontx2-af: Validate NIX maximum LFs correctly",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72410",
    "datePublished": "2026-08-15T05:56:32.843Z",
    "dateReserved": "2026-08-09T03:40:39.926Z",
    "dateUpdated": "2026-08-17T05:43:50.739Z",
    "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.

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