CVE-2022-50444

Local service interruption via Tegra20 node refcount leak

Published Oct 1, 2025 · Updated Oct 1, 2025

Reference-count leak in the Tegra20 clock driver in Linux allows local users to interrupt service through retained kernel resources. During tegra20_clock_init(), of_find_matching_node() increments a device-tree node reference, but the function returns without the required of_node_put(). The affected driver is specific to Tegra20 hardware, and the published record reports availability impact only; no data disclosure or modification is reported.

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

What happened

Reference-count leak in the Tegra20 clock driver in Linux allows local users to interrupt service through retained kernel resources. During tegra20_clock_init(), of_find_matching_node() increments a device-tree node reference, but the function returns without the required of_node_put(). The affected driver is specific to Tegra20 hardware, and the published record reports availability impact only; no data disclosure or modification is reported.

The record

CVE
CVE-2022-50444
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2025Record 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=37c26a906527b8a6a252614ca83d21ad318c4e84 <0172d14f50098f5736b4b272a1529a3e05419bd6
  2. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <4e343bafe03ff68a62f48f8235cf98f2c685468b
  3. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <53531d00e2a8a28a3bf56ea58b18ff3611824f37
  4. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <5d9fb09612defe7b1d5627db7b3833b46eb21e7b
  5. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <6f76ef65899fcd93ca747ef38d7a41931e61e4fa
  6. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <70f0a0a27d79f689defc5f5f0bd47d07813e6dea
  7. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <8cd228892759d37f36a46616025f4fa0d0a63b5d
  8. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <d6e750535b46e12cdde185b416c415e49e4e6e22
  9. Affected versionversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <f9bdef9bb60814514a787b84184ecaa269a7c951
  10. Affected versionversion=3.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=37c26a906527b8a6a252614ca83d21ad318c4e84 <0172d14f50098f5736b4b272a1529a3e05419bd6; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <4e343bafe03ff68a62f48f8235cf98f2c685468b; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <53531d00e2a8a28a3bf56ea58b18ff3611824f37; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <5d9fb09612defe7b1d5627db7b3833b46eb21e7b; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <6f76ef65899fcd93ca747ef38d7a41931e61e4fa; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <70f0a0a27d79f689defc5f5f0bd47d07813e6dea; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <8cd228892759d37f36a46616025f4fa0d0a63b5d; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <d6e750535b46e12cdde185b416c415e49e4e6e22; version=37c26a906527b8a6a252614ca83d21ad318c4e84 <f9bdef9bb60814514a787b84184ecaa269a7c951; version=3.9

Published CVSS scores

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

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 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

T1499.004Application or System Exploitation

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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