CVE-2026-46188
Received Received - Intake
NULL Pointer Dereference in Linux Kernel Octeon EP VF Driver

Publication date: 2026-05-28

Last updated on: 2026-05-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: octeon_ep_vf: add NULL check for napi_build_skb() napi_build_skb() can return NULL on allocation failure. In __octep_vf_oq_process_rx(), the result is used directly without a NULL check in both the single-buffer and multi-fragment paths, leading to a NULL pointer dereference. Add NULL checks after both napi_build_skb() calls, properly advancing descriptors and consuming remaining fragments on failure.
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Meta Information
Published
2026-05-28
Last Modified
2026-05-28
Generated
2026-05-28
AI Q&A
2026-05-28
EPSS Evaluated
N/A
NVD
CVE-2026-46188
EUVD
EUVD-2026-32815
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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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 octeon_ep_vf driver where the function napi_build_skb() can return NULL if memory allocation fails.

In the function __octep_vf_oq_process_rx(), the return value of napi_build_skb() is used without checking if it is NULL, which can lead to a NULL pointer dereference.

The fix involves adding NULL checks after both calls to napi_build_skb(), ensuring that descriptors are properly advanced and remaining fragments are consumed if allocation fails.


How can this vulnerability impact me? :

This vulnerability can cause a NULL pointer dereference in the Linux kernel, which may lead to a system crash or kernel panic.

Such crashes can result in denial of service, affecting system availability and stability.


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