CVE-2026-46188
octeon_ep_vf: add NULL check for napi_build_skb()
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.
INFO
Published Date :
May 28, 2026, 10:16 a.m.
Last Modified :
June 11, 2026, 3:06 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply kernel patch for octeon_ep_vf driver.
- Ensure proper descriptor advancement on failure.
- Consume remaining fragments on allocation failure.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-46188.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46188 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-46188
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-46188 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46188 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jun. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.30 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.12.88 Added Reference Type kernel.org: https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e Added Reference https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572 Added Reference https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3 Added Reference https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3