CVE-2026-64245 (GCVE-0-2026-64245)

Vulnerability from cvelistv5 – Published: 2026-07-24 15:31 – Updated: 2026-07-27 04:37
VLAI
Title
fbdev: modedb: fix a possible UAF in fb_find_mode()
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: modedb: fix a possible UAF in fb_find_mode() If mode_option is NULL, it is assigned from mode_option_buf: if (!mode_option) { fb_get_options(NULL, &mode_option_buf); mode_option = mode_option_buf; } Later, name is assigned from mode_option: const char *name = mode_option; However, mode_option_buf is freed before name is no longer used: kfree(mode_option_buf); while name is still accessed by: if ((name_matches(db[i], name, namelen) || Since name aliases mode_option_buf, this may result in a use-after-free. Fix this by extending the lifetime of mode_option_buf until the end of the function by using scope-based resource management for cleanup.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 089d924d03d5c17b05d02992f57671ccfba1c4f0 , < c7dc382439f7b019e207055b52e9cec051d42fa9 (git)
Affected: 089d924d03d5c17b05d02992f57671ccfba1c4f0 , < f906347d75c7fc377041c6d3c535d0f08846aada (git)
Affected: 089d924d03d5c17b05d02992f57671ccfba1c4f0 , < 4d418cf8daf57e454b4d855bf9b2419fd8e6a540 (git)
Affected: 089d924d03d5c17b05d02992f57671ccfba1c4f0 , < 13b6f0cdd5cd5e60f682ec43134ab0e2024bd356 (git)
Affected: 089d924d03d5c17b05d02992f57671ccfba1c4f0 , < 85b6256469cebdac395e7447147e06b2e151014f (git)
Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.38 , ≤ 6.18.* (semver)
Unaffected: 7.1.3 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/core/modedb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c7dc382439f7b019e207055b52e9cec051d42fa9",
              "status": "affected",
              "version": "089d924d03d5c17b05d02992f57671ccfba1c4f0",
              "versionType": "git"
            },
            {
              "lessThan": "f906347d75c7fc377041c6d3c535d0f08846aada",
              "status": "affected",
              "version": "089d924d03d5c17b05d02992f57671ccfba1c4f0",
              "versionType": "git"
            },
            {
              "lessThan": "4d418cf8daf57e454b4d855bf9b2419fd8e6a540",
              "status": "affected",
              "version": "089d924d03d5c17b05d02992f57671ccfba1c4f0",
              "versionType": "git"
            },
            {
              "lessThan": "13b6f0cdd5cd5e60f682ec43134ab0e2024bd356",
              "status": "affected",
              "version": "089d924d03d5c17b05d02992f57671ccfba1c4f0",
              "versionType": "git"
            },
            {
              "lessThan": "85b6256469cebdac395e7447147e06b2e151014f",
              "status": "affected",
              "version": "089d924d03d5c17b05d02992f57671ccfba1c4f0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/core/modedb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.144",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.38",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.144",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.95",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.38",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.3",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc1",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: modedb: fix a possible UAF in fb_find_mode()\n\nIf mode_option is NULL, it is assigned from mode_option_buf:\n\n  if (!mode_option) {\n    fb_get_options(NULL, \u0026mode_option_buf);\n    mode_option = mode_option_buf;\n  }\n\nLater, name is assigned from mode_option:\n\n  const char *name = mode_option;\n\nHowever, mode_option_buf is freed before name is no longer used:\n\n  kfree(mode_option_buf);\n\nwhile name is still accessed by:\n\n  if ((name_matches(db[i], name, namelen) ||\n\nSince name aliases mode_option_buf, this may result in a\nuse-after-free.\n\nFix this by extending the lifetime of mode_option_buf until the end of the\nfunction by using scope-based resource management for cleanup."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T04:37:28.079Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9"
        },
        {
          "url": "https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540"
        },
        {
          "url": "https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356"
        },
        {
          "url": "https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f"
        }
      ],
      "title": "fbdev: modedb: fix a possible UAF in fb_find_mode()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64245",
    "datePublished": "2026-07-24T15:31:14.142Z",
    "dateReserved": "2026-07-19T15:36:31.772Z",
    "dateUpdated": "2026-07-27T04:37:28.079Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64245",
      "date": "2026-07-31",
      "epss": "0.0016",
      "percentile": "0.05661"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-27T14:45:19.000Z",
      "cve": "CVE-2026-64245",
      "id": "msrc_CVE-2026-64245",
      "initial_release_date": "2026-07-26T01:03:04.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fbdev: modedb: fix a possible UAF in fb_find_mode()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64245.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64245\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-24T16:16:53.917\",\"lastModified\":\"2026-07-30T15:00:27.343\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfbdev: modedb: fix a possible UAF in fb_find_mode()\\n\\nIf mode_option is NULL, it is assigned from mode_option_buf:\\n\\n  if (!mode_option) {\\n    fb_get_options(NULL, \u0026mode_option_buf);\\n    mode_option = mode_option_buf;\\n  }\\n\\nLater, name is assigned from mode_option:\\n\\n  const char *name = mode_option;\\n\\nHowever, mode_option_buf is freed before name is no longer used:\\n\\n  kfree(mode_option_buf);\\n\\nwhile name is still accessed by:\\n\\n  if ((name_matches(db[i], name, namelen) ||\\n\\nSince name aliases mode_option_buf, this may result in a\\nuse-after-free.\\n\\nFix this by extending the lifetime of mode_option_buf until the end of the\\nfunction by using scope-based resource management for cleanup.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/video/fbdev/core/modedb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"089d924d03d5c17b05d02992f57671ccfba1c4f0\",\"lessThan\":\"c7dc382439f7b019e207055b52e9cec051d42fa9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"089d924d03d5c17b05d02992f57671ccfba1c4f0\",\"lessThan\":\"f906347d75c7fc377041c6d3c535d0f08846aada\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"089d924d03d5c17b05d02992f57671ccfba1c4f0\",\"lessThan\":\"4d418cf8daf57e454b4d855bf9b2419fd8e6a540\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"089d924d03d5c17b05d02992f57671ccfba1c4f0\",\"lessThan\":\"13b6f0cdd5cd5e60f682ec43134ab0e2024bd356\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"089d924d03d5c17b05d02992f57671ccfba1c4f0\",\"lessThan\":\"85b6256469cebdac395e7447147e06b2e151014f\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/video/fbdev/core/modedb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.144\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.95\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.38\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.3\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-28T12:44:16+00:00",
      "cve": "CVE-2026-64245",
      "id": "CVE-2026-64245",
      "initial_release_date": "2026-07-24T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fbdev: modedb: fix a possible UAF in fb_find_mode()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64245.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-30T16:32:24Z",
      "cve": "CVE-2026-64245",
      "id": "CVE-2026-64245",
      "initial_release_date": "2026-07-25T00:13:45Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64245",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64245.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.