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Findings

CVE-2021-33655

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

Published Jul 18, 2022 · updated Oct 14, 2026 · linux linux kernel

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 18, 2022 · NIST NVD

    Detected

    When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

  2. Oct 14, 2026 · NIST NVD

    Updated

    When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

Affected

  • cpe debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe linux/linux kernelversion unspecified
  • cpe linux/linux kernel5.19

Sources

  • CVE.orgVulnerability recordCVE-2021-33655

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-33655

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2021-33655

    When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

    nvd.nist.gov

References