{
  "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-2026-53385",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53385",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T11:59:32.732Z",
    "updatedAt": "2026-08-17T04:50:36.006Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "vc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write\n\nA KASAN null-ptr-deref was observed in vcs_notifier():\n\nBUG: KASAN: null-ptr-deref in vcs_notifier+0x98/0x130\nRead of size 2 at addr qmp_cmd_name: qmp_capabilities, arguments: {}\n\nThe issue is a race condition in vcs_write(). When the console_lock is\ntemporarily dropped (to copy data from userspace), the vc_data pointer\nobtained from vcs_vc() may become stale. After re-acquiring the lock,\nvcs_vc() is called again to re-validate the pointer. If the vc has been\ndeallocated in the meantime, vcs_vc() returns NULL, and the while loop\nbreaks (with written > 0). However, after the loop, vcs_scr_updated(vc)\nis still called with the now-NULL vc pointer, leading to a null pointer\ndereference in the notifier chain (vcs_notifier dereferences param->vc).\n\nFix this by adding a NULL check for vc before calling vcs_scr_updated().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "11dddfbb7a4e62489b01074d6c04d9d1b42e4047",
              "status": "affected",
              "versionType": "git",
              "lessThan": "43a6281790273c1b0a9ab76609ff0245b968f1e6"
            },
            {
              "version": "e3d1adcad5b73c7ed0c7edb35ab68abcaa45cf67",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b6bbb85cf45bf0b070e741997fe0af3a772c5ad5"
            },
            {
              "version": "3338d0b9acde770ee588eead5cac32c25e7048fc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ff4806202749a51938236214adc0281481a57366"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8232fca738011ca2ec865b46ec721d1796dc0580"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "73049768ad57145acd337102c5aa3c788e6642c8"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7cc3dd79777f6ae4625ec37e84dd18a26dc88bde"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "74be188eb2dc1c99d63986167b9a67d415fe7326"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "09a43e81279b8da15526da09877134b8bcf618b0"
            },
            {
              "version": "8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a287620312dc6dcb9a093417a0e589bf30fcf38a"
            },
            {
              "version": "934de9a9b659785fed3e820bc0c813a460c71fea",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "0deff678157333d775af190f84696336cdcccd6d",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "a4e3c4c65ae8510e01352c9a4347e05c035b2ce2",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "1de42e7653d6714a7507ba6696151a1fa028c69f",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.181",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.260"
            },
            {
              "version": "5.15.113",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.211"
            },
            {
              "version": "6.1.30",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.177"
            },
            {
              "version": "4.14.327",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.284",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.4.244",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "6.3.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.4"
            },
            {
              "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": "7.1.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}