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

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-07-19 14:56
VLAI
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < 2008f9bb1ede9b688624a241228b8e54fc74f0f6 (git)
Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < d0d2c5ccd1de28368cebeef74d9c530a60eff9a5 (git)
Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < c3fc9976f686f9a95baf87db9d387f218fd65394 (git)
Create a notification for this product.
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)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63986",
      "date": "2026-07-21",
      "epss": "0.00166",
      "percentile": "0.06197"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63986\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:17.847\",\"lastModified\":\"2026-07-19T16:17:17.847\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ethtool/tsinfo.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906\",\"lessThan\":\"2008f9bb1ede9b688624a241228b8e54fc74f0f6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906\",\"lessThan\":\"d0d2c5ccd1de28368cebeef74d9c530a60eff9a5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906\",\"lessThan\":\"c3fc9976f686f9a95baf87db9d387f218fd65394\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ethtool/tsinfo.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.35\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.12\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2008f9bb1ede9b688624a241228b8e54fc74f0f6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c3fc9976f686f9a95baf87db9d387f218fd65394\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d0d2c5ccd1de28368cebeef74d9c530a60eff9a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.