CVE-2022-50343

Local service interruption via RapidIO name leak

Published Sep 16, 2025 · Updated Sep 16, 2025

Missing memory release in the Linux RapidIO subsystem before 6.2 allows local users to exhaust kernel memory and interrupt service. When rio_add_device() fails after dev_set_name() allocates a name, two error paths free rdev directly instead of dropping the device reference with put_device(), bypassing kobject_cleanup(). Reachability requires a configured RapidIO master port and a device-registration failure during enumeration or discovery; repeated failures can deplete kernel memory, but no data access or code execution 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

Missing memory release in the Linux RapidIO subsystem before 6.2 allows local users to exhaust kernel memory and interrupt service. When rio_add_device() fails after dev_set_name() allocates a name, two error paths free rdev directly instead of dropping the device reference with put_device(), bypassing kobject_cleanup(). Reachability requires a configured RapidIO master port and a device-registration failure during enumeration or discovery; repeated failures can deplete kernel memory, but no data access or code execution is reported.

The record

CVE
CVE-2022-50343
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1fa5ae857bb14f6046205171d98506d8112dd74e <3b4676f274a6b5d001176f15d0542100bbf4b59a
  2. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <440afd7fd9b164fdde6fc9da8c47d3d7f20dcce8
  3. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <80fad2e53eaed2b3a2ff596575f65669e13ceda5
  4. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <85fbf58b15c09d3a6a03098c1e42ebfe9002f39d
  5. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <88fa351b20ca300693a206ccd3c4b0e0647944d8
  6. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <c413f65011ff8caffabcde0e1c3ceede48a48d6f
  7. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <c482cb0deb57924335103fe592c379a076d867f8
  8. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <ec3f04f74f50d0b6bac04d795c93c2b852753a7a
  9. Affected versionversion=1fa5ae857bb14f6046205171d98506d8112dd74e <f9574cd48679926e2a569e1957a5a1bcc8a719ac
  10. Affected versionversion=2.6.30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1fa5ae857bb14f6046205171d98506d8112dd74e <3b4676f274a6b5d001176f15d0542100bbf4b59a; version=1fa5ae857bb14f6046205171d98506d8112dd74e <440afd7fd9b164fdde6fc9da8c47d3d7f20dcce8; version=1fa5ae857bb14f6046205171d98506d8112dd74e <80fad2e53eaed2b3a2ff596575f65669e13ceda5; version=1fa5ae857bb14f6046205171d98506d8112dd74e <85fbf58b15c09d3a6a03098c1e42ebfe9002f39d; version=1fa5ae857bb14f6046205171d98506d8112dd74e <88fa351b20ca300693a206ccd3c4b0e0647944d8; version=1fa5ae857bb14f6046205171d98506d8112dd74e <c413f65011ff8caffabcde0e1c3ceede48a48d6f; version=1fa5ae857bb14f6046205171d98506d8112dd74e <c482cb0deb57924335103fe592c379a076d867f8; version=1fa5ae857bb14f6046205171d98506d8112dd74e <ec3f04f74f50d0b6bac04d795c93c2b852753a7a; version=1fa5ae857bb14f6046205171d98506d8112dd74e <f9574cd48679926e2a569e1957a5a1bcc8a719ac; version=2.6.30

Published CVSS scores

5.5CISA-ADPCVSS: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

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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