---
id: CVE-2026-80924
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: krb5 - use kfree_sensitive() for derived key buffers

  crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum()
  free the buffer holding the freshly de…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: krb5 - use kfree_sensitive() for derived key buffers

  crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum()
  free the buffer holding the freshly de…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3936f02bf2d3308a7359dd37dd96cd60603d8170 <
    731a5b6fb4c1705f9405d9029dd64ea81e336207
  - >-
    Linux >= 3936f02bf2d3308a7359dd37dd96cd60603d8170 <
    91b96dc9cc250cd16751f53de525cf3442ca0962
  - >-
    Linux >= 3936f02bf2d3308a7359dd37dd96cd60603d8170 <
    a1bf79365794783b19f5b09e8a23f7ee311e8931
  - >-
    Linux >= 3936f02bf2d3308a7359dd37dd96cd60603d8170 <
    f7d53dd3f267e46a784f219a75072f2f400d42b9
  - Linux 6.15
published: '2026-09-09'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T06:17:06.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80924'
references:
  - url: 'https://git.kernel.org/stable/c/731a5b6fb4c1705f9405d9029dd64ea81e336207'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-09T17:16:03.090Z'
epss: 0.00192
epssPercentile: 0.09189
---

## Overview

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

crypto: krb5 - use kfree_sensitive() for derived key buffers

crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum()
free the buffer holding the freshly derived keys with plain kfree(),
leaving the key material behind in the freed slab object.

## Remediation

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