{
  "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-2023-54277",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54277",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-30T12:16:05.690Z",
    "updatedAt": "2026-05-23T15:35:03.102Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "fbdev: udlfb: Fix endpoint check",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: udlfb: Fix endpoint check\n\nThe syzbot fuzzer detected a problem in the udlfb driver, caused by an\nendpoint not having the expected type:\n\nusb 1-1: Read EDID byte 0 failed: -71\nusb 1-1: Unable to get valid EDID from device/display\n------------[ cut here ]------------\nusb 1-1: BOGUS urb xfer, pipe 3 != type 1\nWARNING: CPU: 0 PID: 9 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed6/0x1880\ndrivers/usb/core/urb.c:504\nModules linked in:\nCPU: 0 PID: 9 Comm: kworker/0:1 Not tainted\n6.4.0-rc1-syzkaller-00016-ga4422ff22142 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google\n04/28/2023\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_submit_urb+0xed6/0x1880 drivers/usb/core/urb.c:504\n...\nCall Trace:\n <TASK>\n dlfb_submit_urb+0x92/0x180 drivers/video/fbdev/udlfb.c:1980\n dlfb_set_video_mode+0x21f0/0x2950 drivers/video/fbdev/udlfb.c:315\n dlfb_ops_set_par+0x2a7/0x8d0 drivers/video/fbdev/udlfb.c:1111\n dlfb_usb_probe+0x149a/0x2710 drivers/video/fbdev/udlfb.c:1743\n\nThe current approach for this issue failed to catch the problem\nbecause it only checks for the existence of a bulk-OUT endpoint; it\ndoesn't check whether this endpoint is the one that the driver will\nactually use.\n\nWe can fix the problem by instead checking that the endpoint used by\nthe driver does exist and is bulk-OUT.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f6db63819db632158647d5bbf4d7d2d90dc1a268",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1522dc58bff87af79461b96d90ec122e9e726004"
            },
            {
              "version": "c4fb41bdf4d6ccca850c4af5d707d14a0fb717a7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58ecc165abdaed85447455e6dc396758e8c6f219"
            },
            {
              "version": "4df1584738f1dc6f0dd854d258bba48591f1ed0e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9e12c58a5ece41be72157cef348576b135c9fc72"
            },
            {
              "version": "aaf7dbe07385e0b8deb7237eca2a79926bbc7091",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c8fdf7feca77cd99e25ef0a1e9e72dfc83add8ef"
            },
            {
              "version": "aaf7dbe07385e0b8deb7237eca2a79926bbc7091",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e19383e5dee5adbf3d19f3f210f440a88d1b7dde"
            },
            {
              "version": "aaf7dbe07385e0b8deb7237eca2a79926bbc7091",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ed9de4ed39875706607fb08118a58344ae6c5f42"
            },
            {
              "version": "895ea8a290ba87850bcaf2ecfcddef75a014fa54",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.192",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.244"
            },
            {
              "version": "5.10.114",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.181"
            },
            {
              "version": "5.15.38",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.114"
            },
            {
              "version": "5.17.6",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.18"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.18"
            },
            {
              "version": "5.4.244",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.181",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.114",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.31",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.3.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}