An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Published 2021-07-09 11:15:09
Updated 2023-01-11 17:10:38
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: OverflowMemory CorruptionInput validation

Products affected by CVE-2021-3612

Exploit prediction scoring system (EPSS) score for CVE-2021-3612

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-3612

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST

CWE ids for CVE-2021-3612

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: secalert@redhat.com (Secondary)
  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: secalert@redhat.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-3612

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