Bug 2467194 (CVE-2026-43282)

Summary: CVE-2026-43282 kernel: RDMA/ionic: Fix potential NULL pointer dereference in ionic_query_port
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's RDMA (Remote Direct Memory Access) ionic driver. This vulnerability occurs in the `ionic_query_port()` function, where a missing check for the return value of `ib_device_get_netdev()` can lead to a NULL pointer dereference. A local attacker could potentially exploit this to cause a system crash, resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-05-06 13:10:02 UTC 
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.
Comment 1 Keith Grant 2026-05-07 00:36:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050614-CVE-2026-43282-d775@gregkh/T