CVE-2024-46834 (GCVE-0-2024-46834)

Vulnerability from cvelistv5 – Published: 2024-09-27 12:39 – Updated: 2026-08-05 11:38
VLAI
Title
ethtool: fail closed if we can't get max channel used in indirection tables
Summary
In the Linux kernel, the following vulnerability has been resolved: ethtool: fail closed if we can't get max channel used in indirection tables Commit 0d1b7d6c9274 ("bnxt: fix crashes when reducing ring count with active RSS contexts") proves that allowing indirection table to contain channels with out of bounds IDs may lead to crashes. Currently the max channel check in the core gets skipped if driver can't fetch the indirection table or when we can't allocate memory. Both of those conditions should be extremely rare but if they do happen we should try to be safe and fail the channel change.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 14:03 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d4ab4286276fcd6c155bafdf4422b712068d2516 , < 101737d8b88dbd4be6010bac398fe810f1950036 (git)
Affected: d4ab4286276fcd6c155bafdf4422b712068d2516 , < 2899d58462ba868287d6ff3acad3675e7adf934f (git)
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Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/ethtool/channels.c",
                "net/ethtool/common.c",
                "net/ethtool/common.h",
                "net/ethtool/ioctl.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "101737d8b88dbd4be6010bac398fe810f1950036",
                  "status": "affected",
                  "version": "d4ab4286276fcd6c155bafdf4422b712068d2516",
                  "versionType": "git"
                },
                {
                  "lessThan": "2899d58462ba868287d6ff3acad3675e7adf934f",
                  "status": "affected",
                  "version": "d4ab4286276fcd6c155bafdf4422b712068d2516",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/ethtool/channels.c",
                "net/ethtool/common.c",
                "net/ethtool/common.h",
                "net/ethtool/ioctl.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.6"
                },
                {
                  "lessThan": "4.6",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.10.*",
                  "status": "unaffected",
                  "version": "6.10.10",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.11",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.10.10",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: fail closed if we can\u0027t get max channel used in indirection tables\n\nCommit 0d1b7d6c9274 (\"bnxt: fix crashes when reducing ring count with\nactive RSS contexts\") proves that allowing indirection table to contain\nchannels with out of bounds IDs may lead to crashes. Currently the\nmax channel check in the core gets skipped if driver can\u0027t fetch\nthe indirection table or when we can\u0027t allocate memory.\n\nBoth of those conditions should be extremely rare but if they do\nhappen we should try to be safe and fail the channel change."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-05T10:53:28.772Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/101737d8b88dbd4be6010bac398fe810f1950036"
            },
            {
              "url": "https://git.kernel.org/stable/c/2899d58462ba868287d6ff3acad3675e7adf934f"
            }
          ],
          "title": "ethtool: fail closed if we can\u0027t get max channel used in indirection tables",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-46834",
        "datePublished": "2024-09-27T12:39:31.110Z",
        "dateReserved": "2024-09-11T15:12:18.287Z",
        "dateUpdated": "2026-01-05T10:53:28.772Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • 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.



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.