---
title: "CVE-2026-80924: Linux Kernel - Information Disclosure"
description: "Linux kernel contains a sensitive data exposure vulnerability caused by using kfree() instead of kfree_sensitive() for derived key buffers in crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum(), letting attackers potentially recover key material from freed memory, exploit requires access to freed slab objects."
url: https://panop.io/threat-heartbeat/CVE-2026-80924/
---

# CVE-2026-80924 Linux Kernel - Information Disclosure

Linux kernel contains a sensitive data exposure vulnerability caused by using kfree() instead of kfree\_sensitive() for derived key buffers in crypto\_krb5\_prepare\_encryption() and crypto\_krb5\_prepare\_checksum(), letting attackers potentially recover key material from freed memory, exploit requires access to freed slab objects.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.32% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80924)

## Details

Type

Information Disclosure

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

9 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-80924](https://nvd.nist.gov/vuln/detail/CVE-2026-80924)
- [https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931](https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931)
- [https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9](https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9)
- [https://git.kernel.org/stable/c/731a5b6fb4c1705f9405d9029dd64ea81e336207](https://git.kernel.org/stable/c/731a5b6fb4c1705f9405d9029dd64ea81e336207)
- [https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962](https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)