---
id: CVE-2026-98024
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  s390/ism: folio_put() after error

  dmb->cpu_addr was allocated via folio_alloc()
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  s390/ism: folio_put() after error

  dmb->cpu_addr was allocated via folio_alloc(). Use folio_put() instead of
  kfree() in the error exit of ism_alloc_dmb() to avoid slab …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-763
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 121fb75414ab8debafd548bded9d888cd5a8f165 <
    90f6f5cb331af52b14c0f309fb27dc243e8e2982
  - >-
    Linux >= 83781384a96b95e2b6403d3c8a002b2c89031770 <
    890e2ef726904d1d8328e4b9f5090eeb8761b9d1
  - >-
    Linux >= 83781384a96b95e2b6403d3c8a002b2c89031770 <
    eebb6a9017b55ac05be770cf7b89f9da49505ae7
  - >-
    Linux >= 83781384a96b95e2b6403d3c8a002b2c89031770 <
    60983356fab0c1171c5cb1b56a36349ebadc608e
  - >-
    Linux >= 83781384a96b95e2b6403d3c8a002b2c89031770 <
    907a56ab3eb8a58500a58daa76087f17bb2b6826
  - Linux f3e23edc4917f72139b805f208aeadf23376a0b5
  - Linux >= 6.6.29 < 6.6.158
  - Linux >= 6.8.8 < 6.9
  - Linux 6.9
published: '2026-09-25'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:18:25.437'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98024'
references:
  - url: 'https://git.kernel.org/stable/c/60983356fab0c1171c5cb1b56a36349ebadc608e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/890e2ef726904d1d8328e4b9f5090eeb8761b9d1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/907a56ab3eb8a58500a58daa76087f17bb2b6826'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/90f6f5cb331af52b14c0f309fb27dc243e8e2982'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eebb6a9017b55ac05be770cf7b89f9da49505ae7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98024.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98024'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541050'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98024'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98024'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98024.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00168
epssPercentile: 0.05972
cvssSource: vendor
ingestedAt: '2026-09-25T11:06:38.855Z'
---

## Overview

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

s390/ism: folio_put() after error

dmb->cpu_addr was allocated via folio_alloc(). Use folio_put() instead of
kfree() in the error exit of ism_alloc_dmb() to avoid slab allocator
corruption.

While at it, reset dmb->cpu_addr after folio_put to avoid unintentional UAF
by future callers.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98024.json)