Security readout for executives and security teams
Plain-English summary
CVE-2022-50191 is a Linux kernel bookkeeping flaw in regulator device-tree handling. A reference count is increased but not released, creating a leak. The public record does not provide CVSS, confirmed business impact, or exploit evidence, so urgency should be based on kernel exposure and vendor guidance.
Executive priority
Handle through normal kernel patch governance unless local vendors assign higher severity. There is no source-backed evidence of active exploitation, but kernel hygiene still matters because affected systems may be hard to patch later.
Technical view
The issue is in of_get_regulation_constraints(), where of_get_child_by_name() returns a referenced node and the code failed to call of_node_put(). Upstream stable commits correct that reference handling. The record lists Linux kernel versions as affected but gives no CWE, CVSS, attacker model, or demonstrated impact.
Likely exposure
Exposure is limited to systems running affected Linux kernel versions or downstream kernels that include the vulnerable regulator OF code path. The bundle does not show that ordinary network services are directly exposed.
Exploitation context
The CVE bundle marks KEV as false and provides no cited evidence of active exploitation, public exploit availability, or remote attack paths. Treat exploitation feasibility as unconfirmed.
Researcher notes
Evidence is sparse: the record describes a refcount leak and links stable commits, but omits CVSS, CWE, exploit prerequisites, and concrete impact. Further assessment should inspect downstream patches and affected kernel configurations.
Mitigation direction
- Inventory Linux kernel versions across servers, appliances, and embedded systems.
- Check distribution or vendor advisories for backported fixes to this kernel issue.
- Apply vendor-supported kernel updates containing the referenced stable fixes.
- Prioritize internet-facing and operationally critical Linux assets during patch planning.
- Track unsupported kernels for replacement or isolation decisions.
Validation and detection
- Compare running kernel versions against the affected entries in the CVE record.
- Review vendor kernel changelogs for CVE-2022-50191 or the referenced upstream commits.
- Confirm patched systems boot the expected updated kernel after maintenance.
- For custom kernels, verify the relevant regulator OF patch is present.
- Document any systems awaiting vendor guidance or maintenance windows.
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-2022-50191 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.
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/a23098cc32860272dc6c3200ff20c34c65b7b694CVE reference, Linux
- https://git.kernel.org/stable/c/b9ca8585c766616563cf3c062c6878f61f83cf00CVE reference, Linux
- https://git.kernel.org/stable/c/35f9e861d9b9434903a8ede37a3561f78985826dCVE reference, Linux
- https://git.kernel.org/stable/c/332e555dca074c4eb2084898021c3676423814c3CVE reference, Linux
- https://git.kernel.org/stable/c/c9df8ff290097aabd5c9200f7f729b0813d37b19CVE reference, Linux
- https://git.kernel.org/stable/c/11ecb4f8735b0230d54a82c18b21ea778b695d61CVE reference, Linux
- https://git.kernel.org/stable/c/fc7b19f547bc9e622060a0a9a39da2330aa21c53CVE reference, Linux
- https://git.kernel.org/stable/c/66efb665cd5ad69b27dca8571bf89fc6b9c628a4CVE reference, Linux
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.