Security readout for executives and security teams
Plain-English summary
This is a Linux kernel availability issue caused by a small resource-management bug in the PFUZE100 regulator driver. A local, low-privileged attacker may be able to trigger resource leakage and degrade availability on affected systems. The sources do not indicate data theft, data modification, remote attack, or active exploitation.
Executive priority
Treat this as a moderate operational-risk patching item, not an emergency internet-facing breach scenario. Prioritize embedded, appliance, and hardware-specific Linux estates where the affected regulator driver may be present.
Technical view
The kernel PFUZE100 regulator parser increments a device-tree node reference with of_node_get() but failed to release it with of_node_put(). The CVSS vector is local, low complexity, low privileges, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is most likely on Linux systems running affected kernel versions or downstream kernels that include the vulnerable PFUZE100 regulator code. Practical relevance depends on kernel configuration, hardware, and device-tree use; the provided sources do not prove broad exposure across all Linux deployments.
Exploitation context
CISA KEV status is false, and the provided sources do not state active exploitation. The CVSS vector indicates local access with low privileges is required. No cited source supports remote exploitation or confidentiality or integrity impact.
Researcher notes
Evidence is limited to the CVE record and upstream stable commits. The root cause is a reference-count leak, with availability impact only per CVSS. No CWE, exploit report, affected distributions, or hardware-specific deployment evidence is included in the source bundle.
Mitigation direction
- Apply the relevant upstream stable kernel fix or a vendor kernel update containing it.
- Check Linux distribution or device vendor guidance for backported fixes.
- Prioritize systems where PFUZE100 regulator support is enabled and used.
- Retire or isolate affected unsupported kernels if no vendor update exists.
- Track kernel advisories for any change in exploitation status.
Validation and detection
- Inventory running kernel versions and downstream vendor kernel package versions.
- Confirm whether PFUZE100 regulator support is built or loaded.
- Verify the kernel source includes of_node_put() cleanup in pfuze_parse_regulators_dt.
- Map installed kernels against the listed upstream stable fix references.
- Document any affected embedded or appliance images separately from general servers.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit b74c0dd9179d
- Linux stable commit 6ca675f4abbc
- Linux stable commit 984cfef0675e
- Linux stable commit 0be5d9da5743
- Linux stable commit 9f564e29a512
- Linux stable commit 56ab0c010274
- Linux stable commit 671be14fc313
- Linux stable commit 49d785baeb91
- Linux stable commit afaa7b933ef0
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-2022-49481 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/b74c0dd9179d21b7260260e075d597b23970100cCVE reference, Linux
- https://git.kernel.org/stable/c/6ca675f4abbc74bc991d154a1ecc8b384dc2aae4CVE reference, Linux
- https://git.kernel.org/stable/c/984cfef0675ed7398814e14af2c5323911723e1cCVE reference, Linux
- https://git.kernel.org/stable/c/0be5d9da5743b9825a95baec85a67500b2c1d362CVE reference, Linux
- https://git.kernel.org/stable/c/9f564e29a51210a49df3d925117777c157a17d6dCVE reference, Linux
- https://git.kernel.org/stable/c/56ab0c01027492cd161c64148e1dc892c56887adCVE reference, Linux
- https://git.kernel.org/stable/c/671be14fc31374b1a10a3abd93db6a8480838fc9CVE reference, Linux
- https://git.kernel.org/stable/c/49d785baeb91568332197be356d138e5e59c7ddbCVE reference, Linux
- https://git.kernel.org/stable/c/afaa7b933ef00a2d3262f4d1252087613fb5c06dCVE 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.