CVE-2023-23454

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Summary

CVECVE-2023-23454
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-01-12 07:15:08 UTC
Updated2026-10-14 23:17:12 UTC
Descriptioncbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

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

EPSS: 0.003120000 probability, percentile 0.224220000 (date 2026-10-14)

Problem Types: CWE-843 | n/a | CWE-843 CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

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
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS: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 Debian Debian Linux 11.0 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 3349-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
oss-security - Re: Type Confusion in Linux Kernel af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-5324-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[SECURITY] [DLA 3403-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
oss-security - Type Confusion in Linux Kernel af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch, Vendor Advisory
cert-portal.siemens.com/productcert/html/ssa-769027.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
cert-portal.siemens.com/productcert/html/ssa-806742.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160505 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12196)
  • 160515 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2023-12207)
  • 160516 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12206)
  • 160692 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-2951)
  • 160719 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12375)
  • 181491 Debian Security Update for linux (DSA 5324-1)
  • 181618 Debian Security Update for linux-5.10 (DLA 3349-1)
  • 181768 Debian Security Update for linux (DLA 3403-1)
  • 183518 Debian Security Update for linux (CVE-2023-23454)
  • 199208 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5915-1)
  • 199212 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5917-1)
  • 199224 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5934-1)
  • 199226 Ubuntu Security Notification for Linux kernel (GCP) Vulnerabilities (USN-5939-1)
  • 199230 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5940-1)
  • 199239 Ubuntu Security Notification for Linux kernel (IBM) Vulnerabilities (USN-5951-1)
  • 199260 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5982-1)
  • 199265 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5987-1)
  • 199276 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-6000-1)
  • 199280 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6004-1)
  • 199343 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6079-1)
  • 199353 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6091-1)
  • 199354 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6096-1)
  • 241504 Red Hat Update for kernel security (RHSA-2023:2951)
  • 241527 Red Hat Update for kernel-rt (RHSA-2023:2736)
  • 242855 Red Hat Update for kernel (RHSA-2024:0412)
  • 354739 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-013
  • 354741 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2023-026
  • 354775 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-042
  • 354913 Amazon Linux Security Advisory for kernel : ALAS2-2023-2027
  • 354923 Amazon Linux Security Advisory for kernel : ALAS-2023-1735
  • 378468 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-20230042)
  • 378473 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2023:0021)
  • 378512 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0042)
  • 390285 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2023-0017)
  • 390286 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2023-0018)
  • 390292 Oracle Managed Virtualization (VM) Server for x86 Security Update for None (OVMSA-2023-0016)
  • 6140066 AWS Bottlerocket Security Update for kernel (GHSA-7xv9-9rj8-9g9f)
  • 672707 EulerOS Security Update for kernel (EulerOS-SA-2023-1444)
  • 672747 EulerOS Security Update for kernel (EulerOS-SA-2023-1469)
  • 672802 EulerOS Security Update for kernel (EulerOS-SA-2023-1551)
  • 672806 EulerOS Security Update for kernel (EulerOS-SA-2023-1526)
  • 672876 EulerOS Security Update for kernel (EulerOS-SA-2023-1614)
  • 672914 EulerOS Security Update for kernel (EulerOS-SA-2023-1781)
  • 672951 EulerOS Security Update for kernel (EulerOS-SA-2023-1759)
  • 673117 EulerOS Security Update for kernel (EulerOS-SA-2023-2152)
  • 753566 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0145-1)
  • 753583 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0152-1)
  • 753688 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0406-1)
  • 753689 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0410-1)
  • 753692 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0407-1)
  • 753709 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0433-1)
  • 753743 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:0618-1)
  • 753901 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1803-1)
  • 753903 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1801-1)
  • 753914 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1848-1)
  • 754023 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2232-1)
  • 755061 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4030-1)
  • 755107 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4095-1)
  • 755842 SUSE Enterprise Linux Security Update for the linux kernel (SUSE-SU-2023:0774-1)
  • 755900 SUSE Enterprise Linux Security Update for the Linux-RT Kernel (SUSE-SU-2023:0488-1)
  • 905254 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (13003)
  • 905261 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (13006)
  • 905288 Common Base Linux Mariner (CBL-Mariner) Security Update for hyperv-daemons (13049)
  • 905407 Common Base Linux Mariner (CBL-Mariner) Security Update for hyperv-daemons (13049-1)
  • 906024 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (13003-2)
  • 906375 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (13006-2)
  • 941096 AlmaLinux Security Update for kernel (ALSA-2023:2951)
  • 941114 AlmaLinux Security Update for kernel-rt (ALSA-2023:2736)

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