CVE-2026-23242
Null Pointer Dereference in Linux Kernel RDMA siw Component
Publication date: 2026-03-18
Last updated on: 2026-04-02
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's RDMA/siw component. It involves a potential NULL pointer dereference during header processing. Specifically, if the function siw_get_hdr() returns an error (-EINVAL) before set_rx_fpdu_context() is called, a pointer (qp->rx_fpdu) can be NULL. Later, the function siw_tcp_rx_data() attempts to access a member (more_ddp_segs) of this pointer without checking if it is NULL, which can lead to a NULL pointer dereference and potentially cause a kernel crash or other unintended behavior.
How can this vulnerability impact me? :
The impact of this vulnerability is that it can cause a NULL pointer dereference in the Linux kernel, which may lead to a kernel crash or system instability. This could result in denial of service or unexpected behavior in systems using the affected RDMA/siw component.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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How can this vulnerability be detected on my network or system? Can you suggest some commands?
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What immediate steps should I take to mitigate this vulnerability?
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