Linux Kernel up to 6.18.9 liquidio setup_nic_devices initialization

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.18.9. Impacted is the function setup_nic_devices of the component liquidio. The manipulation results in initialization. This vulnerability is identified as CVE-2026-23257. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.18.9. Affected is the function setup_nic_devices of the component liquidio. The manipulation with an unknown input leads to a initialization vulnerability. CWE is classifying the issue as CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Fix off-by-one error in PF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Also, decrement i in the devlink_alloc failure path to point to the last successfully allocated index. Compile tested only. Issue found using code review.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-23257 since 01/13/2026. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/21/2026).

The vulnerability scanner Nessus provides a plugin with the ID 315738 (Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel vulnerabilities (USN-8278-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.250, 5.15.200, 6.1.163, 6.6.124, 6.12.70 or 6.18.10 eliminates this vulnerability. Applying the patch af38d9a5cb49fe9d0d282b44f17fdc1f3270d99d/d86c58eb005eb99da402452f3db7a6e0eae32815/f1216b80c9040a904d2ad7c8cd24ca0ff1f36932/a0d2389c8cdc1f05de5eb8663bffe9ed05dca769/f86bd16280a0f88b538394e0565c56ce4756da99/293eaad0d6d6b2a37a458c7deb7be345349cd963/8558aef4e8a1a83049ab906d21d391093cfa7e7f 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 (315738) and CERT Bund (WID-SEC-2026-0790). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source Linux Kernel

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 315738
Nessus Name: Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel vulnerabilities (USN-8278-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.250/5.15.200/6.1.163/6.6.124/6.12.70/6.18.10
Patch: af38d9a5cb49fe9d0d282b44f17fdc1f3270d99d/d86c58eb005eb99da402452f3db7a6e0eae32815/f1216b80c9040a904d2ad7c8cd24ca0ff1f36932/a0d2389c8cdc1f05de5eb8663bffe9ed05dca769/f86bd16280a0f88b538394e0565c56ce4756da99/293eaad0d6d6b2a37a458c7deb7be345349cd963/8558aef4e8a1a83049ab906d21d391093cfa7e7f

Timelineinfo

01/13/2026 CVE reserved
03/18/2026 +64 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
05/21/2026 +64 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23257 (🔒)
GCVE (CVE): GCVE-0-2026-23257
GCVE (VulDB): GCVE-100-351576
CERT Bund: WID-SEC-2026-0790 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 03/18/2026 19:50
Updated: 05/21/2026 22:25
Changes: 03/18/2026 19:50 (59), 03/19/2026 19:45 (7), 03/24/2026 18:41 (1), 05/21/2026 03:04 (10), 05/21/2026 22:25 (2)
Complete: 🔍
Cache ID: 216::103

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