Vulnerability Details : CVE-2022-4744

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.
Published 2023-03-30 21:15:06
Updated 2023-06-26 16:57:30
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2022-4744

Exploit prediction scoring system (EPSS) score for CVE-2022-4744

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-2022-4744

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-2022-4744

  • The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.
    Assigned by: nvd@nist.gov (Primary)
  • The product does not clean up its state or incorrectly cleans up its state when an exception is thrown, leading to unexpected state or control flow.
    Assigned by: secalert@redhat.com (Secondary)
  • The product accesses or uses a pointer that has not been initialized.
    Assigned by: secalert@redhat.com (Secondary)

References for CVE-2022-4744

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