CVE-2022-50623

Status: DeferredHigh (7.8)—

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

fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()

The "hdr.count * sizeof(s32)" multiplication can overflow on 32 bit systems leading to memory corruption. Use array_size() to fix that.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base score: 7.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.15%
Percentile among all scored CVEs: 4
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Primary impactT1059 Command and Scripting Interpreterexecution75 %
Secondary impactT1565.001 Stored Data Manipulationimpact70 %

Acceso local (AV:L) sin interacción del usuario en kernel Linux; desbordamiento de enteros causa corrupción de memoria que permite escalada de privilegios y ejecución de código arbitrario.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management Remote Data Storage

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2022-50623",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "322b598be4d9b9090cda560c4caab78704615ab4",
              "lessThan": "f59861946fa51bcc1f305809e4ebc1013b0ee61c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "322b598be4d9b9090cda560c4caab78704615ab4",
              "lessThan": "b94605f5cb99e90c8ca91523597a40e1bd59546b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "322b598be4d9b9090cda560c4caab78704615ab4",
              "lessThan": "1b5a931594f7ffd26d706614c37d4da0f2ffb6e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "322b598be4d9b9090cda560c4caab78704615ab4",
              "lessThan": "940253af8b3865b76de8d1b46bcd4a700104852e",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "939bc5453b8cbdde9f1e5110ce8309aedb1b501a",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/fpga/dfl.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.9",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/fpga/dfl.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-08T02:15:48.250",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1b5a931594f7ffd26d706614c37d4da0f2ffb6e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/939bc5453b8cbdde9f1e5110ce8309aedb1b501a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/940253af8b3865b76de8d1b46bcd4a700104852e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b94605f5cb99e90c8ca91523597a40e1bd59546b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f59861946fa51bcc1f305809e4ebc1013b0ee61c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: prevent integer overflow in dfl_feature_ioctl_set_irq()\n\nThe \"hdr.count * sizeof(s32)\" multiplication can overflow on 32 bit\nsystems leading to memory corruption.  Use array_size() to fix that."
    }
  ],
  "lastModified": "2026-08-04T10:18:20.040",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}