CVE-2022-50736
Out-of-Bounds Access in Linux RDMA siw Causes KASAN Crash
Publication date: 2025-12-24
Last updated on: 2025-12-24
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 in the Linux kernel's RDMA/siw component involves incorrect handling of immediate work request flushing when the queue pair (QP) is in an ERROR state. Specifically, an undefined opcode value leads to out-of-bounds array access during opcode mapping between siw internal and RDMA core representations, causing a kernel address sanitizer (KASAN) global out-of-bounds bug. Additionally, if the completion queue (CQ) is memory mapped to user space, a malicious user could write undefined values for completion queue elements' status or opcode, potentially triggering similar out-of-bounds accesses.
How can this vulnerability impact me? :
The vulnerability can lead to out-of-bounds memory access in the kernel, which may cause system instability, crashes, or potentially allow a malicious user to manipulate kernel memory if they have access to the memory-mapped completion queue. This could result in denial of service or other unpredictable behavior in systems using the affected RDMA/siw functionality.