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net: ravb: avoid dereferencing an invalid PTP clock

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-80992

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-80992

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "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"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/renesas/ravb.h",
      "drivers/net/ethernet/renesas/ravb_main.c",
      "drivers/net/ethernet/renesas/ravb_ptp.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/renesas/ravb.h",
      "drivers/net/ethernet/renesas/ravb_main.c",
      "drivers/net/ethernet/renesas/ravb_ptp.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80992

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34948 · Revision 1
Added to Heist Feed
Publisher date
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