Security readout for executives and security teams
Plain-English summary
CVE-2022-50772 is a Linux kernel memory leak in the netdevsim component. If device registration fails, a device name allocation is not released. The documented impact is resource leakage, not code execution. Business urgency is mainly for Linux systems using affected kernels where netdevsim can be reached or managed.
Executive priority
Treat as a routine-to-moderate Linux kernel maintenance item unless netdevsim is used broadly in your environment. Prioritize patch validation on test infrastructure and privileged multi-user Linux systems. There is no source-backed evidence of active exploitation.
Technical view
The flaw is in nsim_bus_dev_new(). On device_register() failure, nsim_bus_dev->dev retains a reference and obj->name is not freed. The CVE record lists affected Linux kernel ranges including 5.2 through before 6.0.7 and before 6.1, with stable kernel commits provided as fixes.
Likely exposure
Exposure appears limited to Linux systems running affected kernel versions with netdevsim present and usable. The source shows triggering through a sysfs write path. Internet-facing exposure is not indicated by the provided sources.
Exploitation context
No active exploitation is reported in the provided sources, and CISA KEV status is false. The issue appears local or administrative in nature based on the kernel backtrace, but the CVE record does not provide privileges, CVSS, or CWE details.
Researcher notes
Evidence is sparse: severity, CVSS, CWE, and detailed attack prerequisites are absent. The public description identifies a memory leak on an error path in netdevsim device registration, with two stable kernel references. Avoid assuming remote reachability or privilege escalation without additional vendor analysis.
Mitigation direction
- Update to a Linux kernel containing the referenced stable fixes.
- Check your Linux distribution for backported fixes for CVE-2022-50772.
- If patching is delayed, review vendor guidance for disabling or restricting netdevsim.
- Limit access to kernel device-management interfaces to trusted administrators.
Validation and detection
- Inventory Linux kernel versions across affected systems.
- Confirm whether vendor kernels include the referenced stable commits.
- Identify systems where netdevsim is enabled, loaded, or used for testing.
- Prioritize validation on development, CI, and network-testing hosts.
- Monitor vendor advisories for corrected affected-version statements.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2022-50772 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.