---
id: CVE-2026-89605
title: 'ecryptfs: release message context on send failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ecryptfs: release message context on send failure

  ecryptfs_send_message_locked() moves a message context from the free
  list to the allocated list before sending the re…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-772
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    177e0c32fec3602bb3b64139bb8bb610cd6722c7
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    743e7aeb9575c0838d8996d40d81a6b8fa5cd060
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    590fc6140e29c54d2f7839eb9df78d106ee1905e
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    30845ed227475a11a49ccce047837d016b7e0f49
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    47ce611cb13f0eefa550d5434c1afcd4217bfc3e
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    9319706316a8e79f374627554386d575a84b637f
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    654b7e79443f5ea90849f5c1cf70c0d94bd5b10e
  - >-
    Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 <
    219644a3ad5518217b2d62cad6d2c36a2308c949
  - Linux 2.6.26
published: '2026-09-11'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:49:36.445Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89605'
references:
  - url: 'https://git.kernel.org/stable/c/177e0c32fec3602bb3b64139bb8bb610cd6722c7'
  - url: 'https://git.kernel.org/stable/c/743e7aeb9575c0838d8996d40d81a6b8fa5cd060'
  - url: 'https://git.kernel.org/stable/c/590fc6140e29c54d2f7839eb9df78d106ee1905e'
  - url: 'https://git.kernel.org/stable/c/30845ed227475a11a49ccce047837d016b7e0f49'
  - url: 'https://git.kernel.org/stable/c/47ce611cb13f0eefa550d5434c1afcd4217bfc3e'
  - url: 'https://git.kernel.org/stable/c/9319706316a8e79f374627554386d575a84b637f'
  - url: 'https://git.kernel.org/stable/c/654b7e79443f5ea90849f5c1cf70c0d94bd5b10e'
  - url: 'https://git.kernel.org/stable/c/219644a3ad5518217b2d62cad6d2c36a2308c949'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89605.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89605'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532190'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89605'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89605'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89605.mbox
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00169
epssPercentile: 0.06187
scores:
  cna: 7.8
  vendor: 5.5
ingestedAt: '2026-09-14T15:23:07.451Z'
---

## Overview

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

ecryptfs: release message context on send failure

ecryptfs_send_message_locked() moves a message context from the free
list to the allocated list before sending the request to the userspace
daemon.

If ecryptfs_send_miscdev() fails, the context is left on the
allocated list and cannot be reused. Move it back to the free list on
failure and clear the caller's pointer.

## Affected

- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 177e0c32fec3602bb3b64139bb8bb610cd6722c7`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 743e7aeb9575c0838d8996d40d81a6b8fa5cd060`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 590fc6140e29c54d2f7839eb9df78d106ee1905e`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 30845ed227475a11a49ccce047837d016b7e0f49`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 47ce611cb13f0eefa550d5434c1afcd4217bfc3e`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 9319706316a8e79f374627554386d575a84b637f`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 654b7e79443f5ea90849f5c1cf70c0d94bd5b10e`
- `Linux >= f66e883eb6186bc43a79581b67aff7d1a69d0ff1 < 219644a3ad5518217b2d62cad6d2c36a2308c949`
- `Linux 2.6.26`

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89605.json)