{
  "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-2026-90386",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90386",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:09:21.842Z",
    "updatedAt": "2026-10-19T09:02:48.790Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "i3c: dw: avoid shift-out-of-bounds when DAA assigns no devices",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: dw: avoid shift-out-of-bounds when DAA assigns no devices\n\nOn an empty bus ENTDAA assigns nothing, so cmd->rx_len (the count\nof addresses left unassigned) equals master->maxdevs.\n\nThe GENMASK() index master->maxdevs - cmd->rx_len - 1 then becomes -1,\nwhich trips up UBSAN. This happens every time on boot on a Gigabyte/AMD\nserver:\n\n    UBSAN: shift-out-of-bounds in drivers/i3c/master/dw-i3c-master.c:905:12\n    shift exponent 64 is too large for 64-bit type 'long unsigned int'\n    CPU: 7 UID: 0 PID: 963 Comm: (udev-worker) Not tainted 7.0.11-200.fc44.x86_64 #1 PREEMPT(lazy)\n    Hardware name: Giga Computing E163-Z34-AAH1-000/MZ33-DC1-000, BIOS R32_F45 04/01/2026\n    Call Trace:\n     <TASK>\n     dump_stack_lvl+0x5d/0x80\n     ubsan_epilogue+0x5/0x2b\n     __ubsan_handle_shift_out_of_bounds.cold+0xd7/0x1ab\n     dw_i3c_master_daa.cold+0x1b/0x96 [dw_i3c_master]\n     i3c_master_do_daa_ext.part.0+0x3e/0xf0 [i3c]\n\nSkip the mask when no new device was assigned.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5650b013e6bfc14c8b30be727f4a715b01860a08"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "63110ccc434e10d9e9d2c7d82ebfa8a6f9cedd94"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3a1c35739efb69e8ec2a868113a0471a01bb8f29"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "111f559e5b6461f5f6977275716e6c5d1eb7ea27"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "754533e6169d1f10bdef7a6ba9bd7740b524e1d4"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9eaac0cb4ca94e2e32c53c156ae5b813ba7ef90c"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "618dd640ded6b94bbdb79c798a901ec564797033"
            },
            {
              "version": "1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "038cf48b3170af26a70bf2dee4f8c3ac910f5176"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.0"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}