CVE-2026-23335
Kernel Stack Memory Leak in Linux RDMA irdma Component
Publication date: 2026-03-25
Last updated on: 2026-04-23
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 5.14 |
| linux | linux_kernel | From 6.19 (inc) to 6.19.7 (exc) |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 6.13 (inc) to 6.18.17 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.130 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.77 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.167 (exc) |
| linux | linux_kernel | From 5.14.1 (inc) to 5.15.203 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-401 | The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's RDMA/irdma component, specifically in the function irdma_create_user_ah().
The issue is a kernel stack memory leak caused by a structure named irdma_create_ah_resp, which contains a reserved 4-byte array that is never set or zeroed before being used.
As a result, 4 bytes of potentially sensitive stack memory are leaked unconditionally when the function executes, because only the ah_id field is assigned before the response is sent.
How can this vulnerability impact me? :
This vulnerability can lead to unintended leakage of kernel stack memory contents.
Such leaks may expose sensitive information residing in the kernel stack, which could be exploited by attackers to gain insights into kernel memory layout or data.
While the leak is small (4 bytes), it still represents a potential information disclosure risk.