CVE-2026-98498 (GCVE-0-2026-98498)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:16 – Updated: 2026-10-19 09:20
VLAI
Title
net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get() When the reverse entry is found but its counter is already being released, refcount_inc_not_zero() fails and the reference taken by mlx5_tc_ct_entry_get() is never dropped before falling through to create_counter. Drop it so the reverse entry is not kept alive forever by a shared counter lookup that did not use it.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6794 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 598daa5f95883f881a54967da40ce0fdfc1fdaa8 (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 79a3257280a335bbebbcd10d3895e8468bdcd6ae (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < c45c997d0c27359b502587897f775c5a277f0bd4 (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 288721013605b4e0304e10f6a087b77f71cfad11 (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 60eab87d0a798070bf5a856b1d9e5785ce92da53 (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 99d8dc51663747078c031acac32edc6d90c8f1f7 (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 1f13989a0704bd98cab09f9bee63e2c8a98ad4dd (git)
Affected: 1edae2335adfa7006853e8b427f0c7c3f46b51dd , < 0bf6bb567f0edaa771e7dd208ef98da50e6a4485 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (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/mellanox/mlx5/core/en/tc_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "598daa5f95883f881a54967da40ce0fdfc1fdaa8",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "79a3257280a335bbebbcd10d3895e8468bdcd6ae",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "c45c997d0c27359b502587897f775c5a277f0bd4",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "288721013605b4e0304e10f6a087b77f71cfad11",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "60eab87d0a798070bf5a856b1d9e5785ce92da53",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "99d8dc51663747078c031acac32edc6d90c8f1f7",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "1f13989a0704bd98cab09f9bee63e2c8a98ad4dd",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            },
            {
              "lessThan": "0bf6bb567f0edaa771e7dd208ef98da50e6a4485",
              "status": "affected",
              "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()\n\nWhen the reverse entry is found but its counter is already being\nreleased, refcount_inc_not_zero() fails and the reference taken by\nmlx5_tc_ct_entry_get() is never dropped before falling through to\ncreate_counter.  Drop it so the reverse entry is not kept alive forever\nby a shared counter lookup that did not use it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:20:36.589Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8"
        },
        {
          "url": "https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4"
        },
        {
          "url": "https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11"
        },
        {
          "url": "https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53"
        },
        {
          "url": "https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485"
        }
      ],
      "title": "net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98498",
    "datePublished": "2026-10-18T15:16:30.116Z",
    "dateReserved": "2026-09-25T10:25:14.353Z",
    "dateUpdated": "2026-10-19T09:20:36.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98498",
      "date": "2026-11-01",
      "epss": "0.00216",
      "percentile": "0.12116"
    },
    "microsoft_vex": {
      "current_release_date": "2026-11-02T01:49:30.000Z",
      "cve": "CVE-2026-98498",
      "id": "msrc_CVE-2026-98498",
      "initial_release_date": "2026-10-20T01:07:29.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98498.json",
      "version": "5"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "598daa5f95883f881a54967da40ce0fdfc1fdaa8",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "79a3257280a335bbebbcd10d3895e8468bdcd6ae",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c45c997d0c27359b502587897f775c5a277f0bd4",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "288721013605b4e0304e10f6a087b77f71cfad11",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "60eab87d0a798070bf5a856b1d9e5785ce92da53",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "99d8dc51663747078c031acac32edc6d90c8f1f7",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1f13989a0704bd98cab09f9bee63e2c8a98ad4dd",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0bf6bb567f0edaa771e7dd208ef98da50e6a4485",
                    "status": "affected",
                    "version": "1edae2335adfa7006853e8b427f0c7c3f46b51dd",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.10"
                  },
                  {
                    "lessThan": "5.10",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.271",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.222",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.189",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.158",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.112",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.55",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.9",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()\n\nWhen the reverse entry is found but its counter is already being\nreleased, refcount_inc_not_zero() fails and the reference taken by\nmlx5_tc_ct_entry_get() is never dropped before falling through to\ncreate_counter.  Drop it so the reverse entry is not kept alive forever\nby a shared counter lookup that did not use it."
          }
        ],
        "id": "CVE-2026-98498",
        "lastModified": "2026-10-19T10:19:02.553",
        "metrics": {},
        "published": "2026-10-18T16:17:00.797",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-20T17:41:47+00:00",
      "cve": "CVE-2026-98498",
      "id": "CVE-2026-98498",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "235",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98498.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.