CVE-2022-50352

Kernel memory exhaustion via failed HNS registration

Published Sep 16, 2025 · Updated Sep 16, 2025

Memory leak in the Linux kernel HNS network driver allows local users to consume kernel memory when device registration fails during probing. In hnae_ae_register(), dev_set_name() allocates the class-device name, but a device_register() failure returns without releasing the reference that invokes kobject_cleanup(). The path requires local low-privileged access and a failed HiSilicon HNS device probe; repeated failures can interrupt service by depleting memory.

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 leak in the Linux kernel HNS network driver allows local users to consume kernel memory when device registration fails during probing. In hnae_ae_register(), dev_set_name() allocates the class-device name, but a device_register() failure returns without releasing the reference that invokes kobject_cleanup(). The path requires local low-privileged access and a failed HiSilicon HNS device probe; repeated failures can interrupt service by depleting memory.

The record

CVE
CVE-2022-50352
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=4.4
  2. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <02dc0db19d944b4a90941db505ecf1aaec714be4
  3. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <2974f3b330ef25f5d34a4948d04290c2cd7802cf
  4. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <3b78453cca046d3b03853f0d077ad3ad130db886
  5. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <7ae1345f6ad715acbcdc9e1ac28153684fd498bb
  6. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <91f8f5342bee726ed5692583d58f69e7cc9ae60e
  7. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <a3c148955c22fe1d94d7a2096005679c1f22eddf
  8. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <dfc0337c6dceb6449403b33ecb141f4a1458a1e9
  9. Affected versionversion=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <ff2f5ec5d009844ec28f171123f9e58750cef4bf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <02dc0db19d944b4a90941db505ecf1aaec714be4; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <2974f3b330ef25f5d34a4948d04290c2cd7802cf; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <3b78453cca046d3b03853f0d077ad3ad130db886; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <7ae1345f6ad715acbcdc9e1ac28153684fd498bb; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <91f8f5342bee726ed5692583d58f69e7cc9ae60e; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <a3c148955c22fe1d94d7a2096005679c1f22eddf; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <dfc0337c6dceb6449403b33ecb141f4a1458a1e9; version=6fe6611ff275522a4e4c0359e2f46cdd07780d2f <ff2f5ec5d009844ec28f171123f9e58750cef4bf

Published CVSS scores

5.5CISA ADP VulnrichmentCVSS: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 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-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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