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
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": "2026-06-30T10:21:26+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": "274",
      "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": "2026-08-31T01:26:27Z",
      "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": "346",
      "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/cve-2022-50102.json",
      "version": "49"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.



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.