CVE-2022-50102 (GCVE-0-2022-50102)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-11 19:12
VLAI
Title
video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()
Summary
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() Since the user can control the arguments of the ioctl() from the user space, under special arguments that may result in a divide-by-zero bug in: drivers/video/fbdev/arkfb.c:784: ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul); with hdiv=1, pixclock=1 and hmul=2 you end up with (1*1)/2 = (int) 0. and then in: drivers/video/fbdev/arkfb.c:504: rv = dac_set_freq(par->dac, 0, 1000000000 / pixclock); we'll get a division-by-zero. The following log can reveal it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:ark_set_pixclock drivers/video/fbdev/arkfb.c:504 [inline] RIP: 0010:arkfb_set_par+0x10fc/0x24c0 drivers/video/fbdev/arkfb.c:784 Call Trace: fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1034 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1110 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1189 Fix this by checking the argument of ark_set_pixclock() first.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7 (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < b9a66f23612b84617e04412169e155a4b92f632d (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < a249e1b89ca25e1c34bdf96154e3f6224a91a9af (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 0288fa799e273b08839037499d704dc7bdc13e9a (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 236c1502520b7b08955467ec2e50b3232e34f1f9 (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 9ebc5031958c1f3a2795e4533b4091d77c738d14 (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 15661642511b2b192077684a89f42a8d95d54286 (git)
Affected: 681e14730c73cc2c71af282c001de6bc71c22f00 , < 2f1c4523f7a3aaabe7e53d3ebd378292947e95c8 (git)
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Linux Linux Affected: 2.6.22
Unaffected: 0 , < 2.6.22 (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)
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          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: arkfb: Corrige un error de divisi\u00f3n por cero en ark_set_pixclock() Dado que el usuario puede controlar los argumentos de ioctl() desde el espacio de usuario, bajo argumentos especiales que pueden resultar en un error de divisi\u00f3n por cero en: drivers/video/fbdev/arkfb.c:784: ark_set_pixclock(info, (hdiv * info-\u0026gt;var.pixclock) / hmul); con hdiv=1, pixclock=1 y hmul=2 terminas con (1*1)/2 = (int) 0. y luego en: drivers/video/fbdev/arkfb.c:504: rv = dac_set_freq(par-\u0026gt;dac, 0, 1000000000 / pixclock); obtendremos una divisi\u00f3n por cero. El siguiente registro puede revelarlo: error de divisi\u00f3n: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:ark_set_pixclock drivers/video/fbdev/arkfb.c:504 [en l\u00ednea] RIP: 0010:arkfb_set_par+0x10fc/0x24c0 drivers/video/fbdev/arkfb.c:784 Rastreo de llamadas: fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1034 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1110 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1189 Solucione esto marcando el argumento de ark_set_pixclock() primero."
          }
        ],
        "id": "CVE-2022-50102",
        "lastModified": "2026-06-17T05:22:45.900",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-06-18T11:15:39.553",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0288fa799e273b08839037499d704dc7bdc13e9a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/15661642511b2b192077684a89f42a8d95d54286"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/236c1502520b7b08955467ec2e50b3232e34f1f9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2f1c4523f7a3aaabe7e53d3ebd378292947e95c8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9ebc5031958c1f3a2795e4533b4091d77c738d14"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a249e1b89ca25e1c34bdf96154e3f6224a91a9af"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b9a66f23612b84617e04412169e155a4b92f632d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-369"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-11-06T12:54:35+00:00",
      "cve": "CVE-2022-50102",
      "id": "CVE-2022-50102",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50102.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-11-01T03:08:28Z",
      "cve": "CVE-2022-50102",
      "id": "CVE-2022-50102",
      "initial_release_date": "2025-06-19T03:41:53Z",
      "product_status:known_affected": "344",
      "product_status:known_not_affected": "343",
      "product_status:recommended": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50102",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-50102.json",
      "version": "52"
    }
  }
}



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Nomenclature

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