Vulnerability-Lookup

FKIE_CVE-2022-50097

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2026-08-04 10:18

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: s3fb: Check the size of screen before memset_io() In the function s3fb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug: [ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000 [ 54.083742] #PF: supervisor write access in kernel mode [ 54.083744] #PF: error_code(0x0002) - not-present page [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Call Trace: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Fix the this by checking the value of 'screen_size' before memset_io().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "574912261528589012b61f82d368256247c3a5a8",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "3c35a0dc2b4e7acf24c796043b64fa3eee799239",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "eacb50f1733660911827d7c3720f4c5425d0cdda",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "5e0da18956d38e7106664dc1d06367b22f06edd3",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "ce50d94afcb8690813c5522f24cd38737657db81",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "52461d387cc8c8f8dc40320caa2e9e101f73e7ba",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "6ba592fa014f21f35a8ee8da4ca7b95a018f13e8",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.21"
            },
            {
              "lessThan": "2.6.21",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.256",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.137",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2D3E44AA-2EE9-4B49-A665-78A1AF3F3059",
              "versionEndExcluding": "4.14.291",
              "versionStartIncluding": "2.6.21",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6C47CDE3-B039-4AE5-B8E4-1DC820E473FF",
              "versionEndExcluding": "4.19.256",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B1C63D19-C08C-4308-A848-B2523C9275BD",
              "versionEndExcluding": "5.4.211",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C2BF720F-C5EE-4DE2-9BDF-CE4CFBC767F4",
              "versionEndExcluding": "5.10.137",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "51861563-7F40-460F-82CD-2D3FBDAD6618",
              "versionEndExcluding": "5.15.61",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5B42E453-8837-49D0-A5EF-03F818A6DC11",
              "versionEndExcluding": "5.18.18",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A1A2A5A5-4598-4D7E-BA07-4660398D6C8F",
              "versionEndExcluding": "5.19.2",
              "versionStartIncluding": "5.19",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_set_par(), the value of \u0027screen_size\u0027 is\ncalculated by the user input. If the user provides the improper value,\nthe value of \u0027screen_size\u0027 may larger than \u0027info-\u003escreen_size\u0027, which\nmay cause the following bug:\n\n[   54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[   54.083742] #PF: supervisor write access in kernel mode\n[   54.083744] #PF: error_code(0x0002) - not-present page\n[   54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[   54.083782] Call Trace:\n[   54.083788]  s3fb_set_par+0x1ec6/0x4040\n[   54.083806]  fb_set_var+0x604/0xeb0\n[   54.083836]  do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of \u0027screen_size\u0027 before memset_io()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: s3fb: Verifique el tama\u00f1o de la pantalla antes de memset_io() En la funci\u00f3n s3fb_set_par(), el valor de \u0027screen_size\u0027 se calcula mediante la entrada del usuario. Si el usuario proporciona un valor incorrecto, el valor de \u0027screen_size\u0027 puede ser mayor que \u0027info-\u0026gt;screen_size\u0027, lo que puede causar el siguiente error: [ 54.083733] ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffc90003000000 [ 54.083742] #PF: acceso de escritura del supervisor en modo kernel [ 54.083744] #PF: error_code(0x0002) - p\u00e1gina no presente [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Rastreo de llamadas: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Solucione este problema comprobando el valor de \u0027screen_size\u0027 antes de memset_io()."
    }
  ],
  "id": "CVE-2022-50097",
  "lastModified": "2026-08-04T10:18:04.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T11:15:38.963",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-50097 (GCVE-0-2022-50097)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-08-05 08:57

Title

video: fbdev: s3fb: Check the size of screen before memset_io()

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7061 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/57491226152858901…
https://git.kernel.org/stable/c/3c35a0dc2b4e7acf2…
https://git.kernel.org/stable/c/eacb50f1733660911…
https://git.kernel.org/stable/c/5e0da18956d38e710…
https://git.kernel.org/stable/c/ce50d94afcb869081…
https://git.kernel.org/stable/c/52461d387cc8c8f8d…
https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e…
https://git.kernel.org/stable/c/6ba592fa014f21f35…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < 574912261528589012b61f82d368256247c3a5a8 (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < 3c35a0dc2b4e7acf24c796043b64fa3eee799239 (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < eacb50f1733660911827d7c3720f4c5425d0cdda (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < 5e0da18956d38e7106664dc1d06367b22f06edd3 (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < ce50d94afcb8690813c5522f24cd38737657db81 (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < 52461d387cc8c8f8dc40320caa2e9e101f73e7ba (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0 (git) Affected: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b , < 6ba592fa014f21f35a8ee8da4ca7b95a018f13e8 (git)
Linux	Linux	Affected: 2.6.21 Unaffected: 0 , < 2.6.21 (semver) Unaffected: 4.14.291 , ≤ 4.14.* (semver) Unaffected: 4.19.256 , ≤ 4.19.* (semver) Unaffected: 5.4.211 , ≤ 5.4.* (semver) Unaffected: 5.10.137 , ≤ 5.10.* (semver) Unaffected: 5.15.61 , ≤ 5.15.* (semver) Unaffected: 5.18.18 , ≤ 5.18.* (semver) Unaffected: 5.19.2 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "574912261528589012b61f82d368256247c3a5a8",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "3c35a0dc2b4e7acf24c796043b64fa3eee799239",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "eacb50f1733660911827d7c3720f4c5425d0cdda",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "5e0da18956d38e7106664dc1d06367b22f06edd3",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "ce50d94afcb8690813c5522f24cd38737657db81",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "52461d387cc8c8f8dc40320caa2e9e101f73e7ba",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            },
            {
              "lessThan": "6ba592fa014f21f35a8ee8da4ca7b95a018f13e8",
              "status": "affected",
              "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.21"
            },
            {
              "lessThan": "2.6.21",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.256",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.137",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.291",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.256",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.211",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.137",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.61",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.18",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.2",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_set_par(), the value of \u0027screen_size\u0027 is\ncalculated by the user input. If the user provides the improper value,\nthe value of \u0027screen_size\u0027 may larger than \u0027info-\u003escreen_size\u0027, which\nmay cause the following bug:\n\n[   54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[   54.083742] #PF: supervisor write access in kernel mode\n[   54.083744] #PF: error_code(0x0002) - not-present page\n[   54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[   54.083782] Call Trace:\n[   54.083788]  s3fb_set_par+0x1ec6/0x4040\n[   54.083806]  fb_set_var+0x604/0xeb0\n[   54.083836]  do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of \u0027screen_size\u0027 before memset_io()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is triggered through the local fbdev ioctl path (open /dev/fbN, FBIOPUT_VSCREENINFO \u2192 do_fb_ioctl \u2192 fb_set_var \u2192 s3fb_set_par), not via network or adjacent protocols.\nAC:L - An attacker who can issue FBIOPUT_VSCREENINFO reliably controls xres_virtual/yres_virtual/bits_per_pixel to bypass s3fb_check_var (signed int mem overflow or bpp==0 text mode) and force an oversized memset_io; no race or external conditions are required.\nPR:L - There is no CAP_SYS_ADMIN check on FBIOPUT_VSCREENINFO; access is only gated by /dev/fbN DAC permissions (typically root:video 0660), so an unprivileged video-group user can reach the vulnerable code.\nUI:N - Exploitation requires only the attacker\u0027s own open/ioctl against the framebuffer device; no separate victim action is needed.\nS:U - This is a standard in-kernel driver memory-safety bug affecting the host kernel/device; it does not cross a VM, IOMMU, or other security authority boundary.\nC:N - The corruption is a memset_io of fixed zeros into the PCI framebuffer aperture (and past it into unmapped ioremap space); there is no out-of-bounds read or other information-disclosure primitive.\nI:H - User-controlled dimensions cause an out-of-bounds write via memset_io beyond info-\u003escreen_size into the mapped BAR (and beyond), which is kernel-mediated memory corruption of framebuffer/MMIO space.\nA:H - The demonstrated result is a kernel page-fault oops in memset when the write runs past the ioremap\u0027d region, which can panic or otherwise take down the system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:57:23.864Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"
        },
        {
          "url": "https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"
        },
        {
          "url": "https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"
        }
      ],
      "title": "video: fbdev: s3fb: Check the size of screen before memset_io()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50097",
    "datePublished": "2025-06-18T11:02:34.589Z",
    "dateReserved": "2025-06-18T10:57:27.411Z",
    "dateUpdated": "2026-08-05T08:57:23.864Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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