{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "8e9b8b008f4036df0318870c5d754134ff1b94cc"
            },
            {
              "fixed": "cc4382dc5134826a3936a6b08de17f7dc7abe232"
            },
            {
              "fixed": "9b783b7e03dc78ec102edf618259a2b55911fc6a"
            },
            {
              "fixed": "ac970358c5ca0775841bd2a56ce15dc464b99003"
            },
            {
              "fixed": "6617df8c246311c82cebf061a4cee55b9df60922"
            },
            {
              "fixed": "b134ad2f7c06b3c1098dcc95008e2045ff4b49b2"
            },
            {
              "fixed": "5fae9a928482d4845bca169a3a098789203a1ca4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.212"
            },
            {
              "fixed": "6.1.178"
            },
            {
              "fixed": "6.6.145"
            },
            {
              "fixed": "6.12.97"
            },
            {
              "fixed": "6.18.40"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74424.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: fix NULL pointer dereference for a console without vc_data\n\nfbcon_new_modelist() runs when a framebuffer's modelist changes. For each\nconsole mapped to it with fb_display[i].mode set, it reads vc_cons[i].d and\npasses the vc_num to fbcon_set_disp(). This assumes a console with a mode\nset has a vc_data, but it can be NULL. fbcon_set_disp() sets\nfb_display[i].mode before it checks vc_data, and fbcon_deinit() leaves the\nmode set after the vc_data is freed. fbcon_new_modelist() then dereferences\nthe NULL vc_data.\n\nKeep fb_display[i].mode set only while the console has a vc_data. Check\nvc_data before setting the mode in fbcon_set_disp(), and clear the mode in\nfbcon_deinit(). The existing mode check in fbcon_new_modelist() then skips\nsuch consoles.",
  "id": "CVE-2026-74424",
  "modified": "2026-08-16T03:31:17.885305779Z",
  "published": "2026-08-15T05:59:27.179Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fae9a928482d4845bca169a3a098789203a1ca4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6617df8c246311c82cebf061a4cee55b9df60922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e9b8b008f4036df0318870c5d754134ff1b94cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b783b7e03dc78ec102edf618259a2b55911fc6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac970358c5ca0775841bd2a56ce15dc464b99003"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b134ad2f7c06b3c1098dcc95008e2045ff4b49b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc4382dc5134826a3936a6b08de17f7dc7abe232"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74424.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74424"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "fbcon: fix NULL pointer dereference for a console without vc_data"
}