---
id: CVE-2026-98648
title: 's390/uv: Prevent potential out-of-bounds read'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  s390/uv: Prevent potential out-of-bounds read

  When the system has more than 85 secrets, the uv_secret_list struct
  array only holds up to 85 items per page, resulting i…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d <
    04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f
  - >-
    Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d <
    116bba758533a139bbede8d717a1371bd6d890f6
  - >-
    Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d <
    f47190b08b71e8482072978373ee88cb2dfbdaf4
  - Linux 6.13
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:20:20.496Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98648'
references:
  - url: 'https://git.kernel.org/stable/c/04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f'
  - url: 'https://git.kernel.org/stable/c/116bba758533a139bbede8d717a1371bd6d890f6'
  - url: 'https://git.kernel.org/stable/c/f47190b08b71e8482072978373ee88cb2dfbdaf4'
tags:
  - cve.org
ingestedAt: '2026-10-18T15:45:12.228Z'
---

## Overview

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

s390/uv: Prevent potential out-of-bounds read

When the system has more than 85 secrets, the uv_secret_list struct
array only holds up to 85 items per page, resulting in an out of bounds
read in find_secret_in_page if the targeted secret is in the next page
or not stored at all.

Fix this by looping over the number of stored secrets which is the
per sub-list count of stored secrets and not the overall count.

## Affected

- `Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f`
- `Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 116bba758533a139bbede8d717a1371bd6d890f6`
- `Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < f47190b08b71e8482072978373ee88cb2dfbdaf4`
- `Linux 6.13`

## Remediation

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