{
  "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-2026-46118",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46118",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-28T09:35:33.635Z",
    "updatedAt": "2026-10-15T10:07:24.840Z",
    "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": "pseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()\n\ncommit 6d3789d347a7 (\"papr-hvpipe: convert papr_hvpipe_dev_create_handle() to FD_PREPARE()\"),\nchanged the create handle to FD_PREPARE(), but it caused kernel\nnull-ptr-deref because after call to retain_and_null_ptr(src_info),\nsrc_info is re-used for adding it to the global list.\n\nGetting the following kernel panic in papr_hvpipe_dev_create_handle()\nwhen trying to add src_info to the list.\n Kernel attempted to write user page (0) - exploit attempt? (uid: 0)\n BUG: Kernel NULL pointer dereference on write at 0x00000000\n Faulting instruction address: 0xc0000000001b44a0\n Oops: Kernel access of bad area, sig: 11 [#1]\n ...\n Call Trace:\n papr_hvpipe_dev_ioctl+0x1f4/0x48c (unreliable)\n sys_ioctl+0x528/0x1064\n system_call_exception+0x128/0x360\n system_call_vectored_common+0x15c/0x2ec\n\nNow, the error handling with FD_PREPARE's file cleanup and __free(kfree) auto\ncleanup is getting too convoluted. This is mainly because we need to\nensure only 1 user get the srcID handle. To simplify this, we allocate\nprepare the src_info in the beginning and add it to the global list\nunder a spinlock after checking that no duplicates exist.\n\nThis simplify the error handling where if the FD_ADD fails, we can\nsimply remove the src_info from the list and consume any pending msg in\nhvpipe to be cleared, after src_info became visible in the global list.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "09c15bbbed533903e600660ea09098b3b0524f48",
              "status": "affected",
              "versionType": "git",
              "lessThan": "735439394dde8462f9b50566727fbe333beaadaf"
            },
            {
              "version": "6d3789d347a7af5c4b0b2da3af47b8d9da607ab2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf51bec1560f8bf115d1476f60335f9d90e110b0"
            },
            {
              "version": "6d3789d347a7af5c4b0b2da3af47b8d9da607ab2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1b9f7aafa44f5ce852c00509104d10fd9eb0f402"
            },
            {
              "version": "51a321dec76f7e39403a0574897a4409a8a700c4",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.18.32",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.33"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "6.18.33",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}