---
title: "CVE-2026-89882: Linux Kernel media rkvdec - Out of Bounds Read"
description: "Linux kernel media rkvdec HEVC decoder contains a buffer underflow caused by improper index calculation in INTER_REF_PIC_SET_PRED, letting local userspace attackers cause out-of-bounds read, exploit requires access to RKVDEC m2m decoder."
url: https://panop.io/threat-heartbeat/CVE-2026-89882/
---

# CVE-2026-89882 Linux Kernel media rkvdec - Out of Bounds Read

Linux kernel media rkvdec HEVC decoder contains a buffer underflow caused by improper index calculation in INTER\_REF\_PIC\_SET\_PRED, letting local userspace attackers cause out-of-bounds read, exploit requires access to RKVDEC m2m decoder.

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-2026-89882)

## Details

Type

Out of Bounds Read

Impact

Denial Of Service, Information Disclosure

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.

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-2026-89882](https://nvd.nist.gov/vuln/detail/CVE-2026-89882)
- [https://git.kernel.org/stable/c/052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3](https://git.kernel.org/stable/c/052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3)
- [https://git.kernel.org/stable/c/74938f83a8abbee8f502dfb5d94213b2497d1edf](https://git.kernel.org/stable/c/74938f83a8abbee8f502dfb5d94213b2497d1edf)

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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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