Vulnerability Details : CVE-2022-2639

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Published 2022-09-01 21:15:10
Updated 2024-02-02 02:36:26
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2022-2639

EPSS FAQ
0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-2639

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
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-2022-2639

  • The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
    Assigned by: nvd@nist.gov (Primary)
  • Integer coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types.
    Assigned by: secalert@redhat.com (Secondary)
  • When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.
    Assigned by: nvd@nist.gov (Primary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)

References for CVE-2022-2639

Products affected by CVE-2022-2639

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