Linux Kernel up to 6.18.15/6.19.5 ionic_query_port null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.18.15/6.19.5. This affects the function ionic_query_port. Such manipulation leads to null pointer dereference. This vulnerability is referenced as CVE-2026-43282. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.15/6.19.5. Affected by this issue is the function ionic_query_port. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: RDMA/ionic: Fix potential NULL pointer dereference in ionic_query_port The function ionic_query_port() calls ib_device_get_netdev() without checking the return value which could lead to NULL pointer dereference, Fix it by checking the return value and return -ENODEV if the 'ndev' is NULL.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-43282 since 05/01/2026. Technical details are known, but there is no available exploit.

Upgrading to version 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch 2b96156c927cd83c109e2e3946e6111dce73231f/81932a46dfd0db10a03f46f0b1c7ef946ac4552f/fd80bd7105f88189f47d465ca8cb7d115570de30 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.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.16/6.19.6
Patch: 2b96156c927cd83c109e2e3946e6111dce73231f/81932a46dfd0db10a03f46f0b1c7ef946ac4552f/fd80bd7105f88189f47d465ca8cb7d115570de30

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
05/06/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43282 (🔒)
GCVE (CVE): GCVE-0-2026-43282
GCVE (VulDB): GCVE-100-361550

Entryinfo

Created: 05/06/2026 17:21
Changes: 05/06/2026 17:21 (58)
Complete: 🔍
Cache ID: 216::103

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