{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-46196",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46196",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-28T09:36:49.293Z",
    "updatedAt": "2026-10-15T01:21:17.317Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "tracepoint: balance regfunc() on func_add() failure in tracepoint_add_func()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracepoint: balance regfunc() on func_add() failure in tracepoint_add_func()\n\nWhen a tracepoint goes through the 0 -> 1 transition, tracepoint_add_func()\ninvokes the subsystem's ext->regfunc() before attempting to install the\nnew probe via func_add(). If func_add() then fails (for example, when\nallocate_probes() cannot allocate a new probe array under memory pressure\nand returns -ENOMEM), the function returns the error without calling the\nmatching ext->unregfunc(), leaving the side effects of regfunc() behind\nwith no installed probe to justify them.\n\nFor syscall tracepoints this is particularly unpleasant: syscall_regfunc()\nbumps sys_tracepoint_refcount and sets SYSCALL_TRACEPOINT on every task.\nAfter a leaked failure, the refcount is stuck at a non-zero value with no\nconsumer, and every task continues paying the syscall trace entry/exit\noverhead until reboot. Other subsystems providing regfunc()/unregfunc()\npairs exhibit similarly scoped persistent state.\n\nMirror the existing 1 -> 0 cleanup and call ext->unregfunc() in the\nfunc_add() error path, gated on the same condition used there so the\nunwind is symmetric with the registration.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5787052e5f69beb649f3d6a80a8aa37d9e683e4e"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4f1756d043e56ea2e9a6c858fb290a0cf6fc2251"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "36ff362235307af95152d510b53c2d9b8773a342"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "247ed8a969f981bfba3112fd4bb441eaa6cef59c"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7bcadb3c2bc1cf60690e931aadd35fb7bd646a49"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2c5b8eeea006eb694c81631cd5713d494b80be90"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "342829e042ac00f3d68d442ea92873fb6683f494"
            },
            {
              "version": "8cf868affdc459beee1a941df0cfaba1673740e3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fad217e16fded7f3c09f8637b0f6a224d58b5f2e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "version": "5.10.259",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.140",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.88",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.30",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}