CVE-2026-45928

Local kernel-memory exhaustion via Wave5 allocation leak

Published May 27, 2026 · Updated May 27, 2026

Memory leak in the Wave5 VPU driver in affected Linux Kernel releases allows local users to exhaust kernel memory through codec opens. The wave5_vpu_open_enc() and wave5_vpu_open_dec() error paths return after codec_info allocation failure without freeing the earlier vpu_instance allocation. A local low-privileged user must reach the Wave5 codec open path and induce repeated allocation failures; the bounded consequence is availability loss from kernel-memory depletion.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Wave5 VPU driver in affected Linux Kernel releases allows local users to exhaust kernel memory through codec opens. The wave5_vpu_open_enc() and wave5_vpu_open_dec() error paths return after codec_info allocation failure without freeing the earlier vpu_instance allocation. A local low-privileged user must reach the Wave5 codec open path and induce repeated allocation failures; the bounded consequence is availability loss from kernel-memory depletion.

The record

CVE
CVE-2026-45928
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.8
  2. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <1de71556cbd6e1d0d26fb86b9b3bb8caa0df8495
  3. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <32e9e45cf7e3422d21fa64535588d3572faf71c3
  4. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <52defdd4034db1a34bb48006f889d66a3629224b
  5. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <a519e21e32398459ba357e67b541402f7295ee1b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <1de71556cbd6e1d0d26fb86b9b3bb8caa0df8495; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <32e9e45cf7e3422d21fa64535588d3572faf71c3; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <52defdd4034db1a34bb48006f889d66a3629224b; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <a519e21e32398459ba357e67b541402f7295ee1b

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.001OS Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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