{
  "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-2026-74584",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74584",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-22T14:28:07.988Z",
    "updatedAt": "2026-10-16T19:05:58.544Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "RDMA/bnxt_re: zero shared page before exposing to userspace",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: zero shared page before exposing to userspace\n\nbnxt_re_alloc_ucontext() allocates uctx->shpg via\n__get_free_page(GFP_KERNEL). The buddy allocator does not zero pages\nwithout __GFP_ZERO, so the page contains stale kernel data from\nwhatever object most recently freed it.\n\nThe page is then mapped into userspace via vm_insert_page() under\nBNXT_RE_MMAP_SH_PAGE in bnxt_re_mmap(). The driver only ever writes\n4 bytes (a u32 AVID) at offset BNXT_RE_AVID_OFFT (0x10) inside\nbnxt_re_create_ah(); the remaining 4092 bytes of the page are exposed\nto userspace unsanitised, leaking kernel memory contents.\n\nAny user with access to /dev/infiniband/uverbsX on a host with a\nbnxt_re device (typically rdma group membership) can read this data\nvia a single mmap() at pgoff 0 after IB_USER_VERBS_CMD_GET_CONTEXT.\n\nOther shared pages in the same file already use get_zeroed_page()\ncorrectly:\n\n  drivers/infiniband/hw/bnxt_re/ib_verbs.c\n      srq->uctx_srq_page = (void *)get_zeroed_page(GFP_KERNEL);\n      cq->uctx_cq_page  = (void *)get_zeroed_page(GFP_KERNEL);\n\nuctx->shpg is the only outlier. Bring it in line with the existing\nconvention by switching to get_zeroed_page().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "53c97e9882f4e747b4ac31b211317c2eba541af9"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9896bdfd21d918e9f26a52bc6109cc77970ee0b1"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9128c2411b83a64c0a69d2ff059c741bde25a9cc"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c19b360fa10c521c0b681875cdaa51545d45a491"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3ed2daab02b2a706e882ad31b5c3c4f33cb5bb1"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e2b143df29003d2704b51f62e9297006953dbacb"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c75f8ce4baa29ae57fe615c6a2c5101f59b8b89a"
            },
            {
              "version": "1ac5a404797523cedaf424a3aaa3cf8f9548dff8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f6b079629becfa977f9c51fe53ad2e6dcc55ef44"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "version": "5.10.260",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.144",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.95",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.37",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}