---
id: CVE-2026-99048
title: 'gve: fix napi_disable deadlock when attempting to disable XSK pools'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  gve: fix napi_disable deadlock when attempting to disable XSK pools

  When disabling XSK pools, GVE calls the unlocked versions of
  napi_disable and napi_enable. However,…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 606048cbd8346e616cfaee01b0143d072534136d <
    42935a61001927aa01db10b53b420efd37eaa99b
  - >-
    Linux >= 606048cbd8346e616cfaee01b0143d072534136d <
    3d377911ce81fd4e61af814e750d8e08879a5208
  - >-
    Linux >= 606048cbd8346e616cfaee01b0143d072534136d <
    0cb6939a4dfefa822007b7a71986e06bc4f61f54
  - Linux 6.16
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T12:22:13.825Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-99048'
references:
  - url: 'https://git.kernel.org/stable/c/42935a61001927aa01db10b53b420efd37eaa99b'
  - url: 'https://git.kernel.org/stable/c/3d377911ce81fd4e61af814e750d8e08879a5208'
  - url: 'https://git.kernel.org/stable/c/0cb6939a4dfefa822007b7a71986e06bc4f61f54'
tags:
  - cve.org
ingestedAt: '2026-10-23T13:24:55.526Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

gve: fix napi_disable deadlock when attempting to disable XSK pools

When disabling XSK pools, GVE calls the unlocked versions of
napi_disable and napi_enable. However, the netdev lock has already been
acquired before ndo_bpf is called because GVE supports queue management
ops. Calling the unlocked versions of napi_disable/enable results in a
deadlock when attempting to disable XSK pools, as the thread attempts to
re-acquire a lock it already holds.

Update the NAPI calls to use the locked versions.

This issue was found in production.

## Affected

- `Linux >= 606048cbd8346e616cfaee01b0143d072534136d < 42935a61001927aa01db10b53b420efd37eaa99b`
- `Linux >= 606048cbd8346e616cfaee01b0143d072534136d < 3d377911ce81fd4e61af814e750d8e08879a5208`
- `Linux >= 606048cbd8346e616cfaee01b0143d072534136d < 0cb6939a4dfefa822007b7a71986e06bc4f61f54`
- `Linux 6.16`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.