# CVE-2026-46188: linux: In the Linux kernel, the following vulnerability has been resolved:  octeon_ep_vf: add NULL check for napi_build_skb(...

CVE-2026-46188 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-46188, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-46188
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 28, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.88-1 | [DEBIAN-CVE-2026-46188](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46188.md) | Jun 24, 2026 |
| Linux | linux Debian 14 | 7.0.7-1 | [DEBIAN-CVE-2026-46188](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46188.md) | Jun 24, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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