Vulnerability-Lookup

GHSA-RFH9-X593-FMPR

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:

staging: sm750fb: fix division by zero in ps_to_hz()

ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero.

Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31603"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: sm750fb: fix division by zero in ps_to_hz()\n\nps_to_hz() is called from hw_sm750_crtc_set_mode() without validating\nthat pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO\ncauses a division by zero.\n\nFix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent\nwith other framebuffer drivers.",
  "id": "GHSA-rfh9-x593-fmpr",
  "modified": "2026-04-24T15:32:35Z",
  "published": "2026-04-24T15:32:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31603"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31603 (GCVE-0-2026-31603)

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

Title

staging: sm750fb: fix division by zero in ps_to_hz()

Summary

In the Linux kernel, the following vulnerability has been resolved: staging: sm750fb: fix division by zero in ps_to_hz() ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero. Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/2f640c6043aeab31a…
	https://git.kernel.org/stable/c/1412ba36597a82e92…
	https://git.kernel.org/stable/c/6144895a4335a2491…
	https://git.kernel.org/stable/c/daf6733bd7c4c5015…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2f640c6043aeab31a2f607d7605271860c3b11df (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1412ba36597a82e928f20047f41d6c6582dafe8a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6144895a4335a2491c282931f1f2fa610b86339f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < daf6733bd7c4c5015b431739ac29b0e29021096b (git)

Linux

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/staging/sm750fb/sm750.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2f640c6043aeab31a2f607d7605271860c3b11df",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1412ba36597a82e928f20047f41d6c6582dafe8a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6144895a4335a2491c282931f1f2fa610b86339f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "daf6733bd7c4c5015b431739ac29b0e29021096b",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/sm750fb/sm750.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "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",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: sm750fb: fix division by zero in ps_to_hz()\n\nps_to_hz() is called from hw_sm750_crtc_set_mode() without validating\nthat pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO\ncauses a division by zero.\n\nFix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent\nwith other framebuffer drivers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-24T14:42:26.601Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df"
        },
        {
          "url": "https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f"
        },
        {
          "url": "https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b"
        }
      ],
      "title": "staging: sm750fb: fix division by zero in ps_to_hz()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31603",
    "datePublished": "2026-04-24T14:42:26.601Z",
    "dateReserved": "2026-03-09T15:48:24.122Z",
    "dateUpdated": "2026-04-24T14:42:26.601Z",
    "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-RFH9-X593-FMPR

CVE-2026-31603 (GCVE-0-2026-31603)

Tags

Sightings

Nomenclature