What’s Vulnerable › Vulnerabilities

CVE-2026-43282: RDMA/ionic: Fix potential NULL pointer dereference in ionic_query_port

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-06-17
• Weakness: CWE-476

Description

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.

Affected products

• Linux kernel: from 6.18 before 6.18.16; from 6.19 before 6.19.6; 7.0-rc1 — fixed in 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 6.18.16, 6.19.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2b96156c927cd83c109e2e3946e6111dce73231f
• https://git.kernel.org/stable/c/81932a46dfd0db10a03f46f0b1c7ef946ac4552f
• https://git.kernel.org/stable/c/fd80bd7105f88189f47d465ca8cb7d115570de30

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