CVE-2022-50529

Local denial of service via module-init memory leak

Published Oct 7, 2025 · Updated Oct 7, 2025

Memory leakage in Linux kernel 4.14 and later branches before their listed fixes allows local users to exhaust kernel memory. test_firmware_init() duplicates test_fw_config->name, but its misc_register() failure path returns without freeing that allocation. Triggering the condition requires low-privileged local access and repeated module-load failures; availability is affected without reported data disclosure or modification.

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

Memory leakage in Linux kernel 4.14 and later branches before their listed fixes allows local users to exhaust kernel memory. test_firmware_init() duplicates test_fw_config->name, but its misc_register() failure path returns without freeing that allocation. Triggering the condition requires low-privileged local access and repeated module-load failures; availability is affected without reported data disclosure or modification.

The record

CVE
CVE-2022-50529
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=4.14
  2. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <04dd47a2e169f2d4489636afa07ff0469aab49ab
  3. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <0b5a89e8bce1ea43687742b4de8e216189ff94ac
  4. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <357379d504c0c8b0834e206ad8c49e4b3c98ed4d
  5. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <628de998a3abfffb3f9677d2fb39a1d5dcb32fdb
  6. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <6dd5fbd243f19f087dc79481acb7d69fb57fea2c
  7. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <7610615e8cdb3f6f5bbd9d8e7a5d8a63e3cabf2e
  8. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <8d8c1d6a430f0aadb80036e2b1bc0a05f9fad247
  9. Affected versionversion=c92316bf8e94830a0225f2e904cbdbd173768419 <ed5cbafaf7ce8b86f19998c00eb020c8d49b017f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=c92316bf8e94830a0225f2e904cbdbd173768419 <04dd47a2e169f2d4489636afa07ff0469aab49ab; version=c92316bf8e94830a0225f2e904cbdbd173768419 <0b5a89e8bce1ea43687742b4de8e216189ff94ac; version=c92316bf8e94830a0225f2e904cbdbd173768419 <357379d504c0c8b0834e206ad8c49e4b3c98ed4d; version=c92316bf8e94830a0225f2e904cbdbd173768419 <628de998a3abfffb3f9677d2fb39a1d5dcb32fdb; version=c92316bf8e94830a0225f2e904cbdbd173768419 <6dd5fbd243f19f087dc79481acb7d69fb57fea2c; version=c92316bf8e94830a0225f2e904cbdbd173768419 <7610615e8cdb3f6f5bbd9d8e7a5d8a63e3cabf2e; version=c92316bf8e94830a0225f2e904cbdbd173768419 <8d8c1d6a430f0aadb80036e2b1bc0a05f9fad247; version=c92316bf8e94830a0225f2e904cbdbd173768419 <ed5cbafaf7ce8b86f19998c00eb020c8d49b017f

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

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

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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