CVE-2023-42754

Advisory lineage Upstream: 0 Downstream: 42
Modified
Published: 05 Oct 2023, 18:25
Last modified:06 Nov 2025, 19:47

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.41% LOW
0% probability +0.40%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

05 Oct 2023, 18:25
Published
Vulnerability first disclosed
06 Nov 2025, 19:47
Last Modified
Vulnerability information updated

Description

A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.

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

EPSS Trends

Current EPSS score: 0.41%• Percentile: 33%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

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

Affected Systems

  • fedoraproject•fedora

    37 | 38 | 39

  • linux•linux kernel

    < 6.6 | 6.6:rc1 | 6.6:rc2

  • redhat•enterprise_linux

    8.0 | 9.0

References (10)