---
id: CVE-2025-68814
title: 'io_uring: fix filename leak in __io_openat_prep()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  io_uring: fix filename leak in __io_openat_prep()

   __io_openat_prep() allocates a struct filename using getname(). However,
  for the condition of the file being install…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    2420ef01b2e836fbc05a0a8c73a1016504eb0458
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    8f44c4a550570cd5903625133f938c6b51310c9b
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    18b99fa603d0df5e1c898699c17d3b92ddc80746
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    e232269d511566b1f80872256a48593acc1becf4
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    7fbfb85b05bc960cc50e09d03e5e562131e48d45
  - >-
    Linux >= b9445598d8c60a1379887b957024b71343965f74 <
    b14fad555302a2104948feaff70503b64c80ac01
  - Linux 5.15
published: '2026-01-13'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:43:34.790Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-68814'
references:
  - url: 'https://git.kernel.org/stable/c/2420ef01b2e836fbc05a0a8c73a1016504eb0458'
  - url: 'https://git.kernel.org/stable/c/8f44c4a550570cd5903625133f938c6b51310c9b'
  - url: 'https://git.kernel.org/stable/c/18b99fa603d0df5e1c898699c17d3b92ddc80746'
  - url: 'https://git.kernel.org/stable/c/e232269d511566b1f80872256a48593acc1becf4'
  - url: 'https://git.kernel.org/stable/c/7fbfb85b05bc960cc50e09d03e5e562131e48d45'
  - url: 'https://git.kernel.org/stable/c/b14fad555302a2104948feaff70503b64c80ac01'
tags:
  - cve.org
epss: 0.00206
epssPercentile: 0.09568
ingestedAt: '2026-09-08T15:33:26.995Z'
---

## Overview

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

io_uring: fix filename leak in __io_openat_prep()

 __io_openat_prep() allocates a struct filename using getname(). However,
for the condition of the file being installed in the fixed file table as
well as having O_CLOEXEC flag set, the function returns early. At that
point, the request doesn't have REQ_F_NEED_CLEANUP flag set. Due to this,
the memory for the newly allocated struct filename is not cleaned up,
causing a memory leak.

Fix this by setting the REQ_F_NEED_CLEANUP for the request just after the
successful getname() call, so that when the request is torn down, the
filename will be cleaned up, along with other resources needing cleanup.

## Affected

- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < 2420ef01b2e836fbc05a0a8c73a1016504eb0458`
- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < 8f44c4a550570cd5903625133f938c6b51310c9b`
- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < 18b99fa603d0df5e1c898699c17d3b92ddc80746`
- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < e232269d511566b1f80872256a48593acc1becf4`
- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < 7fbfb85b05bc960cc50e09d03e5e562131e48d45`
- `Linux >= b9445598d8c60a1379887b957024b71343965f74 < b14fad555302a2104948feaff70503b64c80ac01`
- `Linux 5.15`

## Remediation

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