GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-72410 (GCVE-0-2026-72410)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:43
VLAI
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < 0933fe0130eb71af0c3ab481b40f543b458a8c54 (git)
Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < e0ac054416bf4e913fe96cefefe94e3331bbe6fa (git)
Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < b1f6381acf9d55fab208e8b4c252a5a671820bd9 (git)
Affected: dd7842878633453e38d6a4927593dd28b9d8ab91 , < 1576d12a39860418d6a68b402fda71a48f04a57c (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-72410",
      "date": "2026-09-15",
      "epss": "0.00163",
      "percentile": "0.05896"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-72410\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:22:14.623\",\"lastModified\":\"2026-08-17T06:19:07.830\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"dd7842878633453e38d6a4927593dd28b9d8ab91\",\"lessThan\":\"0933fe0130eb71af0c3ab481b40f543b458a8c54\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dd7842878633453e38d6a4927593dd28b9d8ab91\",\"lessThan\":\"e0ac054416bf4e913fe96cefefe94e3331bbe6fa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dd7842878633453e38d6a4927593dd28b9d8ab91\",\"lessThan\":\"b1f6381acf9d55fab208e8b4c252a5a671820bd9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dd7842878633453e38d6a4927593dd28b9d8ab91\",\"lessThan\":\"1576d12a39860418d6a68b402fda71a48f04a57c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T17:54:19+00:00",
      "cve": "CVE-2026-72410",
      "id": "CVE-2026-72410",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: octeontx2-af: Validate NIX maximum LFs correctly",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72410.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T11:46:12Z",
      "cve": "CVE-2026-72410",
      "id": "CVE-2026-72410",
      "initial_release_date": "2026-09-02T11:46:12Z",
      "product_status:known_not_affected": "362",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-72410",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72410.json",
      "version": "2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.