---
title: "CVE-2026-89880: Linux kernel rtl2832_sdr - Memory Management Flaw"
description: "Linux kernel media rtl2832_sdr contains a memory management flaw caused by improper release of URBs and stream buffers on start_streaming() failure, letting attackers cause memory leaks and potential out-of-bounds access, exploit requires triggering streaming start failure."
url: https://panop.io/threat-heartbeat/CVE-2026-89880/
---

# CVE-2026-89880 Linux kernel rtl2832\_sdr - Memory Management Flaw

Linux kernel media rtl2832\_sdr contains a memory management flaw caused by improper release of URBs and stream buffers on start\_streaming() failure, letting attackers cause memory leaks and potential out-of-bounds access, exploit requires triggering streaming start failure.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89880)

## Details

Type

Memory Management Flaw

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

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for rtl2832\_sdr start\_streaming() failure.

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-2026-89880](https://nvd.nist.gov/vuln/detail/CVE-2026-89880)
- [https://git.kernel.org/stable/c/8bcf11a239eac4e224ad856277de9a36c91b1711](https://git.kernel.org/stable/c/8bcf11a239eac4e224ad856277de9a36c91b1711)
- [https://git.kernel.org/stable/c/ac02b2c56ccef0788cea9b86990a8f349a3fc6d8](https://git.kernel.org/stable/c/ac02b2c56ccef0788cea9b86990a8f349a3fc6d8)
- [https://git.kernel.org/stable/c/c819dea3a433ae790b829443fdcc1715d1586560](https://git.kernel.org/stable/c/c819dea3a433ae790b829443fdcc1715d1586560)
- [https://git.kernel.org/stable/c/c91e8ae2b39c6da81f26f2c9877d3fd33a4465ce](https://git.kernel.org/stable/c/c91e8ae2b39c6da81f26f2c9877d3fd33a4465ce)
- [https://git.kernel.org/stable/c/f14a713a36a5c87568430e9770896f2a8f5bbbb7](https://git.kernel.org/stable/c/f14a713a36a5c87568430e9770896f2a8f5bbbb7)
- [https://git.kernel.org/stable/c/fe50cdaebf12cd32ff9a44d92bfd6fbc2300dbd4](https://git.kernel.org/stable/c/fe50cdaebf12cd32ff9a44d92bfd6fbc2300dbd4)
- [https://git.kernel.org/stable/c/0337ab0759285076a3f9dcfcc40906e69ab519b3](https://git.kernel.org/stable/c/0337ab0759285076a3f9dcfcc40906e69ab519b3)
- [https://git.kernel.org/stable/c/26a2a985bbeee3eaa6f80ff7de732161a171ec9f](https://git.kernel.org/stable/c/26a2a985bbeee3eaa6f80ff7de732161a171ec9f)

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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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