Vulnerability-Lookup

GHSA-RJ76-WCHJ-2F64

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure

The goto err label leads to:

genlmsg_cancel(skb, ehdr);
return ret;

If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg. There's nothing to cancel, and passing an error pointer to genlmsg_cancel() would cause a crash.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63986"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: tsinfo: don\u0027t pass ERR_PTR to genlmsg_cancel on prepare failure\n\nThe goto err label leads to:\n\n\tgenlmsg_cancel(skb, ehdr);\n\treturn ret;\n\nIf ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg.\nThere\u0027s nothing to cancel, and passing an error pointer to\ngenlmsg_cancel() would cause a crash.",
  "id": "GHSA-rj76-wchj-2f64",
  "modified": "2026-07-19T18:31:48Z",
  "published": "2026-07-19T18:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63986"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2008f9bb1ede9b688624a241228b8e54fc74f0f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3fc9976f686f9a95baf87db9d387f218fd65394"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0d2c5ccd1de28368cebeef74d9c530a60eff9a5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63986 (GCVE-0-2026-63986)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-07-19 14:56

Title

ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure

Summary

In the Linux kernel, the following vulnerability has been resolved: ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure The goto err label leads to: genlmsg_cancel(skb, ehdr); return ret; If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg. There's nothing to cancel, and passing an error pointer to genlmsg_cancel() would cause a crash.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/2008f9bb1ede9b688…
https://git.kernel.org/stable/c/d0d2c5ccd1de28368…
https://git.kernel.org/stable/c/c3fc9976f686f9a95…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < 2008f9bb1ede9b688624a241228b8e54fc74f0f6 (git) Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < d0d2c5ccd1de28368cebeef74d9c530a60eff9a5 (git) Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < c3fc9976f686f9a95baf87db9d387f218fd65394 (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ethtool/tsinfo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2008f9bb1ede9b688624a241228b8e54fc74f0f6",
              "status": "affected",
              "version": "b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906",
              "versionType": "git"
            },
            {
              "lessThan": "d0d2c5ccd1de28368cebeef74d9c530a60eff9a5",
              "status": "affected",
              "version": "b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906",
              "versionType": "git"
            },
            {
              "lessThan": "c3fc9976f686f9a95baf87db9d387f218fd65394",
              "status": "affected",
              "version": "b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ethtool/tsinfo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: tsinfo: don\u0027t pass ERR_PTR to genlmsg_cancel on prepare failure\n\nThe goto err label leads to:\n\n\tgenlmsg_cancel(skb, ehdr);\n\treturn ret;\n\nIf ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg.\nThere\u0027s nothing to cancel, and passing an error pointer to\ngenlmsg_cancel() would cause a crash."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:56:08.203Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2008f9bb1ede9b688624a241228b8e54fc74f0f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0d2c5ccd1de28368cebeef74d9c530a60eff9a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3fc9976f686f9a95baf87db9d387f218fd65394"
        }
      ],
      "title": "ethtool: tsinfo: don\u0027t pass ERR_PTR to genlmsg_cancel on prepare failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63986",
    "datePublished": "2026-07-19T14:56:08.203Z",
    "dateReserved": "2026-07-19T07:54:57.025Z",
    "dateUpdated": "2026-07-19T14:56:08.203Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-RJ76-WCHJ-2F64

CVE-2026-63986 (GCVE-0-2026-63986)

Tags

Sightings

Nomenclature