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CVE-2025-39967 fbcon: fix integer overflow in fbcon_do_set_font

🗓️ 15 Oct 2025 07:55:51Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

Linux kernel framebuffer console font size overflow fixed by adding overflow checks in font size calculations.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/core/fbcon.c"
    ],
    "versions": [
      {
        "version": "96e41fc29e8af5c5085fb8a79cab8d0d00bab86c",
        "lessThan": "994bdc2d23c79087fbf7dcd9544454e8ebcef877",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "39b3cffb8cf3111738ea993e2757ab382253d86a",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "39b3cffb8cf3111738ea993e2757ab382253d86a",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "39b3cffb8cf3111738ea993e2757ab382253d86a",
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        "status": "affected",
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      },
      {
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      },
      {
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        "status": "affected",
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      },
      {
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      {
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      },
      {
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      },
      {
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      },
      {
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      },
      {
        "version": "34cf1aff169dc6dedad8d79da7bf1b4de2773dbc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.4.62",
        "lessThan": "5.4.300",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.4.235",
        "lessThan": "4.5",
        "status": "affected",
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      },
      {
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      {
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      },
      {
        "version": "4.19.143",
        "lessThan": "4.20",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.8.6",
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        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/core/fbcon.c"
    ],
    "versions": [
      {
        "version": "5.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.4.300",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.245",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.194",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.155",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.109",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.50",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16.10",
        "lessThanOrEqual": "6.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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