---
title: "CVE-2026-80982: Linux Kernel - Use After Free"
description: "Linux kernel contains a use-after-free vulnerability in net/smc due to improper locking in smc_rx_pipe_buf_release(), letting attackers cause memory corruption or denial of service, exploit requires concurrent socket close and receive operations."
url: https://panop.io/threat-heartbeat/CVE-2026-80982/
---

# CVE-2026-80982 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in net/smc due to improper locking in smc\_rx\_pipe\_buf\_release(), letting attackers cause memory corruption or denial of service, exploit requires concurrent socket close and receive operations.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.16% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80982)

## Details

Type

Use After Free

Impact

Denial Of Service

CVSS vector

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

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for smc\_rx\_pipe\_buf\_release() use-after-free.

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-2026-80982](https://nvd.nist.gov/vuln/detail/CVE-2026-80982)
- [https://git.kernel.org/stable/c/0761e49aa78c2f1362511054c6e9670653858837](https://git.kernel.org/stable/c/0761e49aa78c2f1362511054c6e9670653858837)
- [https://git.kernel.org/stable/c/0926f59ca0f94120895b92180c636a48d0ed3a6d](https://git.kernel.org/stable/c/0926f59ca0f94120895b92180c636a48d0ed3a6d)
- [https://git.kernel.org/stable/c/6a644a7340df978785f3109d1e0726a982ce2c6f](https://git.kernel.org/stable/c/6a644a7340df978785f3109d1e0726a982ce2c6f)
- [https://git.kernel.org/stable/c/c924884743e948e25625b7fbf3ee2a9325a204a7](https://git.kernel.org/stable/c/c924884743e948e25625b7fbf3ee2a9325a204a7)
- [https://git.kernel.org/stable/c/dadd97c8296b23aa816e91ed70041820ae087baa](https://git.kernel.org/stable/c/dadd97c8296b23aa816e91ed70041820ae087baa)
- [https://git.kernel.org/stable/c/df441f3efbb50eb0f120b8de4bf441c31fb0551d](https://git.kernel.org/stable/c/df441f3efbb50eb0f120b8de4bf441c31fb0551d)

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## 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

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