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MEDIUM

CVE-2023-42754

CVSS v3

5.5

MEDIUM

EPSS Score

0.4 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • bpftoolAlmaLinux:9all versions · fixed in 7.3.0-427.13.1.el9_4
  • kernelAlmaLinux:9all versions · fixed in 5.14.0-427.13.1.el9_4and 60 other packages
  • linux-gcpUbuntu:23.10all versions · fixed in 6.5.0-1010.10and 1 other package

Vendor advisories

  • CVE-2023-42754 Red Hat Product Security429 products fixed · 22 known affected

    kernel: ipv4: NULL pointer dereference in ipv4_send_dest_unreach()

    kernel-rt as a component of Red Hat Enterprise Linux 9 · kernel-rt-core as a component of Red Hat Enterprise Linux 9 · kernel-rt-debug as a component of Red Hat Enterprise Linux 9

  • ICSA-25-044-09 CISA19 known affected

    Siemens SCALANCE W700 IEEE 802.11ax

    SCALANCE WAB762-1 (6GK5762-1AJ00-6AA0) · SCALANCE WAM763-1 (6GK5763-1AL00-7DA0) · SCALANCE WAM763-1 (ME) (6GK5763-1AL00-7DC0)

  • SSA-769027 Siemens ProductCERT19 known affected

    SSA-769027: Multiple Vulnerabilities fixed in SCALANCE W700 IEEE 802.11ax devices before V3.0.0

    SCALANCE WAB762-1 (6GK5762-1AJ00-6AA0) · SCALANCE WAM763-1 (6GK5763-1AL00-7DA0) · SCALANCE WAM763-1 (ME) (6GK5763-1AL00-7DC0)

  • RHSA-2024:2950 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security and bug fix update

  • RHSA-2024:3138 Red Hat Product Security120 products fixed

    Red Hat Security Advisory: kernel security, bug fix, and enhancement update

  • RHSA-2024:2394 Red Hat Product Security279 products fixed

    Red Hat Security Advisory: kernel security, bug fix, and enhancement update

4 more advisories

Full record on NVD

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.

Technical details

Published
2023-10-05

Frequently asked questions

What is CVE-2023-42754?

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.

Is CVE-2023-42754 actively exploited?

Active exploitation of CVE-2023-42754 has not been confirmed. Its EPSS score was 0.4% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-42754?

CVE-2023-42754 has a CVSS v3 base score of 5.5 (MEDIUM severity).

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