Linux Kernel up to 6.18.9 IRQ dpaa2_switch_rx out-of-bounds

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CTI Interest Score
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2.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.15.199/6.1.162/6.6.123/6.12.69/6.18.9. This vulnerability affects the function dpaa2_switch_rx of the component IRQ Handler. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-23180. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.199/6.1.162/6.6.123/6.12.69/6.18.9. It has been classified as problematic. Affected is the function dpaa2_switch_rx of the component IRQ Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: add bounds check for if_id in IRQ handler The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially. Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx().

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-23180 since 01/13/2026. The exploitability is told to be difficult. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 299101 (Linux Distros Unpatched Vulnerability : CVE-2026-23180), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.200, 6.1.163, 6.6.124, 6.12.70 or 6.18.10 eliminates this vulnerability. Applying the patch 77611cab5bdfff7a070ae574bbfba20a1de99d1b/34b56c16efd61325d80bf1d780d0e176be662f59/f89e33c9c37f0001b730e23b3b05ab7b1ecface2/2447edc367800ba914acf7ddd5d250416b45fb31/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9/31a7a0bbeb006bac2d9c81a2874825025214b6d8 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (299101), EUVD (EUVD-2026-5861) and CERT Bund (WID-SEC-2026-0421). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.5

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299101
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23180

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.200/6.1.163/6.6.124/6.12.70/6.18.10
Patch: 77611cab5bdfff7a070ae574bbfba20a1de99d1b/34b56c16efd61325d80bf1d780d0e176be662f59/f89e33c9c37f0001b730e23b3b05ab7b1ecface2/2447edc367800ba914acf7ddd5d250416b45fb31/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9/31a7a0bbeb006bac2d9c81a2874825025214b6d8

Timelineinfo

01/13/2026 CVE reserved
02/14/2026 +32 days Advisory disclosed
02/14/2026 +0 days VulDB entry created
04/13/2026 +58 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23180 (🔒)
GCVE (CVE): GCVE-0-2026-23180
GCVE (VulDB): GCVE-100-346074
EUVD: 🔒
CERT Bund: WID-SEC-2026-0421 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 02/14/2026 18:57
Updated: 04/13/2026 06:22
Changes: 02/14/2026 18:57 (59), 02/15/2026 13:07 (2), 02/19/2026 13:32 (1), 02/20/2026 06:47 (1), 04/13/2026 06:22 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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