Vulnerability-Lookup

GHSA-879H-M867-CPJQ

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-24 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide by zero error"), we also need to prevent that same crash from happening in the udlfb driver as it uses pixclock directly when dividing, which will crash.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31618"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:41Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO\n\nMuch like commit 19f953e74356 (\"fbdev: fb_pm2fb: Avoid potential divide\nby zero error\"), we also need to prevent that same crash from happening\nin the udlfb driver as it uses pixclock directly when dividing, which\nwill crash.",
  "id": "GHSA-879h-m867-cpjq",
  "modified": "2026-04-24T15:32:35Z",
  "published": "2026-04-24T15:32:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31618"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53cb4e79a07124d2ebe502983c29800104080b47"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63dfb0b4741f46d65b667c4275132b3d1966acc8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6567d3e1aaadfebf44ce7dc9ea2630323cd4c736"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc386daa6846551a88d338ba9864fc2812cd9030"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31618 (GCVE-0-2026-31618)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-04-25 05:48

Title

fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide by zero error"), we also need to prevent that same crash from happening in the udlfb driver as it uses pixclock directly when dividing, which will crash.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/53cb4e79a07124d2e…
	https://git.kernel.org/stable/c/fc386daa6846551a8…
	https://git.kernel.org/stable/c/6567d3e1aaadfebf4…
	https://git.kernel.org/stable/c/63dfb0b4741f46d65…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 53cb4e79a07124d2ebe502983c29800104080b47 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fc386daa6846551a88d338ba9864fc2812cd9030 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6567d3e1aaadfebf44ce7dc9ea2630323cd4c736 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 63dfb0b4741f46d65b667c4275132b3d1966acc8 (git)

Linux

Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 6.12.83 , ≤ 6.12.* (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0.1 , ≤ 7.0.* (semver)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/tdfxfb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "53cb4e79a07124d2ebe502983c29800104080b47",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "fc386daa6846551a88d338ba9864fc2812cd9030",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6567d3e1aaadfebf44ce7dc9ea2630323cd4c736",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "63dfb0b4741f46d65b667c4275132b3d1966acc8",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/tdfxfb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.83",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.24",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.1",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO\n\nMuch like commit 19f953e74356 (\"fbdev: fb_pm2fb: Avoid potential divide\nby zero error\"), we also need to prevent that same crash from happening\nin the udlfb driver as it uses pixclock directly when dividing, which\nwill crash."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-25T05:48:24.167Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/53cb4e79a07124d2ebe502983c29800104080b47"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc386daa6846551a88d338ba9864fc2812cd9030"
        },
        {
          "url": "https://git.kernel.org/stable/c/6567d3e1aaadfebf44ce7dc9ea2630323cd4c736"
        },
        {
          "url": "https://git.kernel.org/stable/c/63dfb0b4741f46d65b667c4275132b3d1966acc8"
        }
      ],
      "title": "fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31618",
    "datePublished": "2026-04-24T14:42:37.173Z",
    "dateReserved": "2026-03-09T15:48:24.123Z",
    "dateUpdated": "2026-04-25T05:48:24.167Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-879H-M867-CPJQ

CVE-2026-31618 (GCVE-0-2026-31618)

Tags

Sightings

Nomenclature