CVE-2023-3772

Advisory lineage Upstream: 0 Downstream: 63
Modified
Published: 25 Jul 2023, 15:47
Last modified:07 Nov 2025, 13:03

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Jul 2023, 15:47
Published
Vulnerability first disclosed
07 Nov 2025, 13:03
Last Modified
Vulnerability information updated

Description

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•debian_linux

    10.0 | 12.0

  • fedoraproject•fedora

    na

  • linux•linux_kernel

    na

  • redhat•enterprise_linux

    8.0 | 9.0

  • redhat•enterprise_linux_for_real_time

    8.0

  • redhat•enterprise_linux_for_real_time_for_nfv

    8.0

References (12)