---
id: CVE-2026-89497
title: 'orangefs: skip leading spaces before parsing client debug masks'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  orangefs: skip leading spaces before parsing client debug masks

  orangefs_prepare_cdm_array() sizes each client debug keyword buffer
  with strcspn(cds_head, " "), but th…
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
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    173bfd69696815bcf1c052f61cb69c26cca4e443
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    995f4d05589f87452a56672270af28918c8939c3
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    0ef38d53bca5ea1375fea0d3d11e9727df064b85
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    ce748ae1181d0daf5dd0d2d906d5c1cc328c153b
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    15d79c806231e62a7b746d3b42626810004e1b27
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    116d14f29a0524853c9316f32a2ac06cff5d4bf6
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    1774c5b3713add32fe15ab0d3db4b73355f94e35
  - >-
    Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a <
    d410cd5303ec59c7cf23dd61423752ce8e9ecb59
  - Linux 4.6
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T12:00:32.105Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89497'
references:
  - url: 'https://git.kernel.org/stable/c/173bfd69696815bcf1c052f61cb69c26cca4e443'
  - url: 'https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3'
  - url: 'https://git.kernel.org/stable/c/0ef38d53bca5ea1375fea0d3d11e9727df064b85'
  - url: 'https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b'
  - url: 'https://git.kernel.org/stable/c/15d79c806231e62a7b746d3b42626810004e1b27'
  - url: 'https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6'
  - url: 'https://git.kernel.org/stable/c/1774c5b3713add32fe15ab0d3db4b73355f94e35'
  - url: 'https://git.kernel.org/stable/c/d410cd5303ec59c7cf23dd61423752ce8e9ecb59'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.02901
ingestedAt: '2026-09-14T15:23:07.452Z'
---

## Overview

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

orangefs: skip leading spaces before parsing client debug masks

orangefs_prepare_cdm_array() sizes each client debug keyword buffer
with strcspn(cds_head, " "), but then parses the keyword with %s. The
%s conversion skips leading whitespace, while strcspn() does not.

If a client debug entry starts with a space, the allocation can be sized
for an empty keyword while sscanf() copies the following non-empty token.
This can write past the end of the allocated keyword buffer.

Skip leading spaces before computing the keyword length so the allocation
matches the string parsed by sscanf().

## Affected

- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 173bfd69696815bcf1c052f61cb69c26cca4e443`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 995f4d05589f87452a56672270af28918c8939c3`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 0ef38d53bca5ea1375fea0d3d11e9727df064b85`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < ce748ae1181d0daf5dd0d2d906d5c1cc328c153b`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 15d79c806231e62a7b746d3b42626810004e1b27`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 116d14f29a0524853c9316f32a2ac06cff5d4bf6`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < 1774c5b3713add32fe15ab0d3db4b73355f94e35`
- `Linux >= f7be4ee07fb72a516563bc2870ef41fa589a964a < d410cd5303ec59c7cf23dd61423752ce8e9ecb59`
- `Linux 4.6`

## Remediation

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