CVE-2021-33655 (GCVE-0-2021-33655)

Vulnerability from cvelistv5 – Published: 2022-07-18 14:45 – Updated: 2026-10-14 11:44
VLAI
Summary
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.
Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
openEuler CNA under the mitre root
CNA scorecard – unranked: 0 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
n/a kernel Affected: 5.18 5.19.0-rc1
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < V1.1 (custom)
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      "cve": "CVE-2021-33655",
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      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "514",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33655.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-10-17T01:36:30Z",
      "cve": "CVE-2021-33655",
      "id": "CVE-2021-33655",
      "initial_release_date": "2023-02-15T03:40:19Z",
      "product_status:known_affected": "236",
      "product_status:known_not_affected": "26",
      "product_status:recommended": "1736",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-33655",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2021-33655.json",
      "version": "59"
    }
  }
}



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Sightings

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