CVE-2021-33656

Advisory lineage Upstream: 0 Downstream: 35
Modified
Published: 18 Jul 2022, 14:44
Last modified:03 Aug 2024, 23:58

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
6.8 MEDIUM
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Jul 2022, 14:44
Published
Vulnerability first disclosed
03 Aug 2024, 23:58
Last Modified
Vulnerability information updated

Description

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.8CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 9%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux_kernel

    < 5.10.127

  • openatom•openeuler

    20.03 | 20.03:sp1 | 20.03:sp3

References (4)