CVE-2026-63999 (GCVE-0-2026-63999)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-07-19 14:56
VLAI
Title
ethtool: rss: fix indir_table and hkey leak on get_rxfh failure
Summary
In the Linux kernel, the following vulnerability has been resolved: ethtool: rss: fix indir_table and hkey leak on get_rxfh failure rss_prepare_get() allocates the indirection table and hash key buffer via rss_get_data_alloc(), then calls ops->get_rxfh() to populate them. If get_rxfh() fails, the function returns an error without freeing the allocation.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6618 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4f038a6a02d20859a3479293cbf172b0f14cbdd6 , < 33d05c22d6f227c5ae171c46df2f6f8bf48047ea (git)
Affected: 4f038a6a02d20859a3479293cbf172b0f14cbdd6 , < 80d95d92f828cfcace955d673637d944178b435f (git)
Affected: 4f038a6a02d20859a3479293cbf172b0f14cbdd6 , < 266297692f97008ca48bc311775c087c59bd7fe3 (git)
Affected: 81a5174e64ce4fb7b7a2f6499b835c904c9451ee (git)
Affected: ec9faff49a4ea27731de39cb887b7e590e93157b (git)
Affected: c5ed0eaddcbda56079091fc3876b140a6e70a548 (git)
Affected: a065b996052656a65afc51ad82336dc55ae4c72f (git)
Affected: adee9db710a6117b978a25ed4153846b7c56ec9a (git)
Affected: 5eb3fdc4b6281b29e830300c866a36d90442b1f0 (git)
Affected: 5.15.181 , < 5.16 (semver)
Affected: 6.1.135 , < 6.2 (semver)
Affected: 6.6.88 , < 6.7 (semver)
Affected: 6.12.24 , < 6.13 (semver)
Affected: 6.13.12 , < 6.14 (semver)
Affected: 6.14.3 , < 6.15 (semver)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        "id": "CVE-2026-63999",
        "lastModified": "2026-10-08T15:49:03.000",
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        "published": "2026-07-19T16:17:39.477",
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            "url": "https://git.kernel.org/stable/c/33d05c22d6f227c5ae171c46df2f6f8bf48047ea"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/80d95d92f828cfcace955d673637d944178b435f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-09T03:07:43+00:00",
      "cve": "CVE-2026-63999",
      "id": "CVE-2026-63999",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "185",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ethtool: rss: fix indir_table and hkey leak on get_rxfh failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63999.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-03T00:50:56Z",
      "cve": "CVE-2026-63999",
      "id": "CVE-2026-63999",
      "initial_release_date": "2026-07-21T13:01:51Z",
      "product_status:known_affected": "484",
      "product_status:known_not_affected": "251",
      "product_status:recommended": "252",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-63999",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-63999.json",
      "version": "12"
    }
  }
}



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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

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.



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.