---
id: CVE-2023-53259
title: >-
  VMCI: check context->notify_page after call to get_user_pages_fast() to avoid
  GPF
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  VMCI: check context->notify_page after call to get_user_pages_fast() to avoid
  GPF


  The call to get_user_pages_fast() in vmci_host_setup_notify() can return

  NULL context…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    b4239bfb260d1e6837766c41a0b241d7670f1402
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    d4198f67e7556b1507f14f60d81a72660e5560e4
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    a3c89e8c69a58f62451c0a75b77fcab25979b897
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    055891397f530f9b1b22be38d7eca8b08382941f
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    91b8e4f61f8f4594ee65368c8d89e6fdc29d3fb1
  - >-
    Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc <
    1a726cb47fd204109c767409fa9ca15a96328f14
  - Linux 4.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:20:39.550639Z'
published: '2025-09-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:21:07.902Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53259'
references:
  - url: 'https://git.kernel.org/stable/c/b4239bfb260d1e6837766c41a0b241d7670f1402'
  - url: 'https://git.kernel.org/stable/c/d4198f67e7556b1507f14f60d81a72660e5560e4'
  - url: 'https://git.kernel.org/stable/c/a3c89e8c69a58f62451c0a75b77fcab25979b897'
  - url: 'https://git.kernel.org/stable/c/055891397f530f9b1b22be38d7eca8b08382941f'
  - url: 'https://git.kernel.org/stable/c/91b8e4f61f8f4594ee65368c8d89e6fdc29d3fb1'
  - url: 'https://git.kernel.org/stable/c/1a726cb47fd204109c767409fa9ca15a96328f14'
tags:
  - cve.org
epss: 0.00152
epssPercentile: 0.04426
ingestedAt: '2026-11-05T22:38:31.788Z'
---

## Overview

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

VMCI: check context->notify_page after call to get_user_pages_fast() to avoid GPF

The call to get_user_pages_fast() in vmci_host_setup_notify() can return
NULL context->notify_page causing a GPF. To avoid GPF check if
context->notify_page == NULL and return error if so.

general protection fault, probably for non-canonical address
    0xe0009d1000000060: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x0005088000000300-
    0x0005088000000307]
CPU: 2 PID: 26180 Comm: repro_34802241 Not tainted 6.1.0-rc4 #1
Hardware name: Red Hat KVM, BIOS 1.15.0-2.module+el8.6.0 04/01/2014
RIP: 0010:vmci_ctx_check_signal_notify+0x91/0xe0
Call Trace:
 <TASK>
 vmci_host_unlocked_ioctl+0x362/0x1f40
 __x64_sys_ioctl+0x1a1/0x230
 do_syscall_64+0x3a/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

## Affected

- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < b4239bfb260d1e6837766c41a0b241d7670f1402`
- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < d4198f67e7556b1507f14f60d81a72660e5560e4`
- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < a3c89e8c69a58f62451c0a75b77fcab25979b897`
- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < 055891397f530f9b1b22be38d7eca8b08382941f`
- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < 91b8e4f61f8f4594ee65368c8d89e6fdc29d3fb1`
- `Linux >= a1d88436d53a75e950db15834b3d2f8c0c358fdc < 1a726cb47fd204109c767409fa9ca15a96328f14`
- `Linux 4.0`

## Remediation

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