CVE-2021-47653

Kernel compromise via stale VPIF platform devices

Published Feb 26, 2025 · Updated May 11, 2026

Use-after-free in the Linux kernel's DaVinci VPIF driver from 4.13 allows local users to compromise the kernel during driver unbind. The probe path registers capture and display platform devices, but the remove callback fails to unregister them before devres frees their structures. Exploitation requires local low-privilege access and a system using the TI DaVinci VPIF driver; the stale devices expose kernel confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel's DaVinci VPIF driver from 4.13 allows local users to compromise the kernel during driver unbind. The probe path registers capture and display platform devices, but the remove callback fails to unregister them before devres frees their structures. Exploitation requires local low-privilege access and a system using the TI DaVinci VPIF driver; the stale devices expose kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2021-47653
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.13
  2. Affected versionversion=479f7a1181058689435baddc16a6a42e1a8ff0e8 <43acb728bbc40169d2e2425e84a80068270974be
  3. Affected versionversion=479f7a1181058689435baddc16a6a42e1a8ff0e8 <6512c3c39cb6b573b791ce45365818a38b76afbe
  4. Affected versionversion=479f7a1181058689435baddc16a6a42e1a8ff0e8 <9ffc602e14d7b9f7e7cb2f67e18dfef9ef8af676
  5. Affected versionversion=479f7a1181058689435baddc16a6a42e1a8ff0e8 <b5a3bb7f6f164eb6ee74ef4898dcd019b2063448

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=479f7a1181058689435baddc16a6a42e1a8ff0e8 <43acb728bbc40169d2e2425e84a80068270974be; version=479f7a1181058689435baddc16a6a42e1a8ff0e8 <6512c3c39cb6b573b791ce45365818a38b76afbe; version=479f7a1181058689435baddc16a6a42e1a8ff0e8 <9ffc602e14d7b9f7e7cb2f67e18dfef9ef8af676; version=479f7a1181058689435baddc16a6a42e1a8ff0e8 <b5a3bb7f6f164eb6ee74ef4898dcd019b2063448

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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