Kernel: ipv4: null pointer dereference in ipv4_send_dest_unreach()

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Summary

CVECVE-2023-42754
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-10-05 19:15:11 UTC
Updated2026-10-15 00:16:37 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476 | CWE-476 NULL Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 37 All All All
Operating System Fedoraproject Fedora 38 All All All
Operating System Fedoraproject Fedora 39 All All All
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 6.6 rc1 All All
Operating System Linux Linux Kernel 6.6 rc2 All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-553.rt7.342.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-553.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-427.13.1.el9_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-427.13.1.el9_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Patch, Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 38 Update: kernel-6.5.6-200.fc38 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 37 Update: kernel-6.5.6-100.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
2239845 – (CVE-2023-42754) CVE-2023-42754 kernel: ipv4: NULL pointer dereference in ipv4_send_dest_unreach() af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-769027.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
access.redhat.com/errata/RHSA-2024:3138 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
[SECURITY] Fedora 39 Update: kernel-6.5.6-300.fc39 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
access.redhat.com/errata/RHSA-2024:2950 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
access.redhat.com/errata/RHSA-2024:2394 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
oss-sec: [CVE-2023-42754] null pointer dereference in Linux kernel ipv4 stack af854a3a-2127-422b-91ae-364da2661108 seclists.org Exploit, Mailing List, Patch, Third Party Advisory
lists.debian.org/debian-lts-announce/2024/01/msg00004.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-09-13T00:00:00.000ZReported to Red Hat.
CNA2023-09-17T00:00:00.000ZMade public.

Workarounds

CNA: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Legacy QID Mappings

  • 199881 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6461-1)
  • 199936 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6494-1)
  • 199970 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6494-2)
  • 199976 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6534-1)
  • 199979 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6532-1)
  • 199980 Ubuntu Security Notification for Linux kernel Vulnerability (USN-6536-1)
  • 199982 Ubuntu Security Notification for Linux kernel (GCP) Vulnerability (USN-6537-1)
  • 199996 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6549-1)
  • 199997 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6548-1)
  • 199999 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6548-2)
  • 200002 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6534-2)
  • 200003 Ubuntu Security Notification for Linux kernel (GKE) Vulnerabilities (USN-6549-2)
  • 200006 Ubuntu Security Notification for Linux kernel (Oracle) Vulnerabilities (USN-6548-3)
  • 200007 Ubuntu Security Notification for Linux kernel (Low Latency) Vulnerabilities (USN-6549-3)
  • 200010 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6534-3)
  • 200024 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6549-4)
  • 200035 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6549-5)
  • 200037 Ubuntu Security Notification for Linux kernel (IoT) Vulnerabilities (USN-6548-5)
  • 200113 Ubuntu Security Notification for Linux kernel (GCP) Vulnerabilities (USN-6635-1)
  • 284598 Fedora Security Update for kernel (FEDORA-2023-50bd7c9c12)
  • 284599 Fedora Security Update for kernel (FEDORA-2023-830d9ec624)
  • 285211 Fedora Security Update for kernel (FEDORA-2023-c3bb819677)
  • 356530 Amazon Linux Security Advisory for kernel : ALAS2023-2023-385
  • 356562 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-055
  • 356569 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-028
  • 356612 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2023-042
  • 379043 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0136)
  • 6000429 Debian Security Update for linux (DLA 3710-1)
  • 6140258 AWS Bottlerocket Security Update for kernel (GHSA-88vc-qqhp-5j29)
  • 6140310 AWS Bottlerocket Security Update for kernel (GHSA-f87x-mhxq-hfcc)
  • 673534 EulerOS Security Update for kernel (EulerOS-SA-2024-1086)
  • 673563 EulerOS Security Update for kernel (EulerOS-SA-2024-1144)
  • 673595 EulerOS Security Update for kernel (EulerOS-SA-2023-3247)
  • 673644 EulerOS Security Update for kernel (EulerOS-SA-2023-3336)
  • 673692 EulerOS Security Update for kernel (EulerOS-SA-2023-3275)
  • 673923 EulerOS Security Update for kernel (EulerOS-SA-2024-1062)
  • 673995 EulerOS Security Update for kernel (EulerOS-SA-2024-1275)
  • 674042 EulerOS Security Update for kernel (EulerOS-SA-2023-3304)
  • 755059 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4035-1)
  • 755060 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4031-1)
  • 755063 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4032-1)
  • 755082 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4058-1)
  • 755083 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4057-1)
  • 755085 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4072-1)
  • 755086 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4071-1)
  • 755096 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4093-1)
  • 755229 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4072-2)
  • 755235 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4377-1)
  • 755564 SUSE Security Update for the linux kernel (SUSE-SU-2023:4348-1)
  • 755565 SUSE Security Update for the linux kernel (SUSE-SU-2023:4347-1)
  • 907569 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (31271-1)

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