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 CPE status
Linux Linux Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < 2008f9bb1ede9b688624a241228b8e54fc74f0f6 (git)
Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < d0d2c5ccd1de28368cebeef74d9c530a60eff9a5 (git)
Affected: b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 , < c3fc9976f686f9a95baf87db9d387f218fd65394 (git)
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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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{
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          "programFiles": [
            "net/ethtool/tsinfo.c"
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          "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."
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      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:56:08.203Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "ethtool: tsinfo: don\u0027t pass ERR_PTR to genlmsg_cancel on prepare failure",
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    "datePublished": "2026-07-19T14:56:08.203Z",
    "dateReserved": "2026-07-19T07:54:57.025Z",
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          }
        ],
        "id": "CVE-2026-63986",
        "lastModified": "2026-07-30T14:51:11.223",
        "metrics": {},
        "published": "2026-07-19T16:17:17.847",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ethtool: tsinfo: don\u0027t pass ERR_PTR to genlmsg_cancel on prepare failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63986.json",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-63986",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-63986.json",
      "version": "4"
    }
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}



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