CVE-2026-80992

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: net: ravb: avoid dereferencing an invalid PTP clock The PTP clock is unavailable before the first open, so querying its index can dereference a NULL pointer. Registration failures can also leave an error pointer in priv->ptp.clock. Cache the PHC index separately and report -1 while no clock is registered. Normalize registration errors to NULL and preserve the static timestamping capabilities.

Severity

HIGH

CVSS score

7.8 (v3.1)

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-11 20:19:06.110000

Last modified

2026-10-19 09:17:32.047000

View original CVE JSON

{
  "id": "CVE-2026-80992",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-11T20:19:06.110",
  "lastModified": "2026-10-19T09:17:32.047",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ravb: avoid dereferencing an invalid PTP clock\n\nThe PTP clock is unavailable before the first open, so querying its\nindex can dereference a NULL pointer. Registration failures can also\nleave an error pointer in priv->ptp.clock.\n\nCache the PHC index separately and report -1 while no clock is\nregistered. Normalize registration errors to NULL and preserve the\nstatic timestamping capabilities."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/ethernet/renesas/ravb.h",
            "drivers/net/ethernet/renesas/ravb_main.c",
            "drivers/net/ethernet/renesas/ravb_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "29ffd972531f8e6e0edf4ea3496190acff9fc9c2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "bf3308416a2be85dcc9965b614a745b40beeff14",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "fc710f89a644e030a7ca15343176ca862fd61b9d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "8d4d06d6e2b501cb8e30ed3b1924c470358e8052",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "0aaa53936419cf0c19c670387fc6d431e042a1b6",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c",
              "lessThan": "1f77af0aaf277413ff32f6ff8c2c4282bd64c897",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/net/ethernet/renesas/ravb.h",
            "drivers/net/ethernet/renesas/ravb_main.c",
            "drivers/net/ethernet/renesas/ravb_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.2",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.2",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.188",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.109",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.50",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.4",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "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/0aaa53936419cf0c19c670387fc6d431e042a1b6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/29ffd972531f8e6e0edf4ea3496190acff9fc9c2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bf3308416a2be85dcc9965b614a745b40beeff14",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}