---
id: CVE-2026-98005
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  erofs: delimit inode_share cache key components

  Previously, inode_share keys were encoded as follows:

    fingerprint || domain_id

  It would be better to have a separat…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  erofs: delimit inode_share cache key components

  Previously, inode_share keys were encoded as follows:

    fingerprint || domain_id

  It would be better to have a separat…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e0bf7d1c074dc4252223ae897560345ccc24100d <
    16322a67336cfeea0af4b05206ef8d0e0eda55bb
  - >-
    Linux >= e0bf7d1c074dc4252223ae897560345ccc24100d <
    96bf9831fbf423b8104f7948cd8fe7007ecfb46c
  - Linux 7.0
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:28.740'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98005'
references:
  - url: 'https://git.kernel.org/stable/c/16322a67336cfeea0af4b05206ef8d0e0eda55bb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/96bf9831fbf423b8104f7948cd8fe7007ecfb46c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.860Z'
---

## Overview

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

erofs: delimit inode_share cache key components

Previously, inode_share keys were encoded as follows:

  fingerprint || domain_id

It would be better to have a separator between the fingerprint and domain
ID so that the fingerprint won't be parsed as part of a domain ID.

Change the key encoding as follows:

  domain_id || '\0' || fingerprint

Since domain_id is a NUL-terminated string, this makes the in-memory key
indices unambiguous.

## Remediation

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