Security readout for executives and security teams
Plain-English summary
CVE-2022-49367 is a Linux kernel resource leak in the Marvell mv88e6xxx DSA switch driver. It can affect availability, not data confidentiality or integrity. The CVSS vector requires local access with low privileges, so business urgency is highest for Linux-based network devices or embedded systems using this driver.
Executive priority
Schedule remediation through normal kernel or firmware maintenance, with higher priority for network appliances where local users or tenants can trigger driver paths. No source indicates active exploitation or remote attack capability.
Technical view
The bug is a missing of_node_put() after of_get_child_by_name() in mv88e6xxx_mdio_register(). The leaked device-tree node reference can consume kernel resources over repeated use. The CVE is rated CVSS 5.5, local attack vector, low complexity, low privileges, no user interaction, high availability impact.
Likely exposure
Exposure is likely limited to Linux systems with affected kernel versions that include and use the mv88e6xxx DSA driver path. The source lists Linux 4.11 and several stable branch versions through 5.19 as affected, with kernel.org stable fixes referenced.
Exploitation context
The source bundle does not cite public exploitation, and KEV is false. The CVSS vector indicates local, low-privileged access is required. Treat this as a reliability and denial-of-service concern rather than a remote compromise issue based on available evidence.
Researcher notes
The key evidence is the Linux kernel fix description: of_get_child_by_name() increments a node reference, and the code failed to release it after of_mdiobus_register(). Evidence is limited to the CVE record and stable commit references; no exploit details or operational triggers are provided.
Mitigation direction
- Update to a vendor kernel containing the referenced stable Linux fixes.
- Prioritize Linux-based network appliances using Marvell mv88e6xxx DSA switching hardware.
- Check distribution or appliance vendor advisories for backported kernel fixes.
- Restrict unnecessary local shell or user access on exposed affected systems.
Validation and detection
- Confirm the running kernel version and vendor patch level.
- Check whether the mv88e6xxx driver is built, loaded, or used.
- Review kernel package changelogs for the referenced stable fix commits.
- Validate affected appliances against vendor firmware release notes.
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-2022-49367 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/dc1cf8c6f9793546696fded437a5b4c84944c48bCVE reference, Linux
- https://git.kernel.org/stable/c/86c3c5f8e4bd1325e24f6fba9017cade29933377CVE reference, Linux
- https://git.kernel.org/stable/c/a101793994c0a14c70bb4e44c7fda597eeebba0aCVE reference, Linux
- https://git.kernel.org/stable/c/42658e47f1abbbe592007d3ba303de466114d0bbCVE reference, Linux
- https://git.kernel.org/stable/c/c1df9cb756e5a9ba1841648c44ee5d92306b9c65CVE reference, Linux
- https://git.kernel.org/stable/c/e0d763d0c7665c7897e4f5a0847ab0c82543345fCVE reference, Linux
- https://git.kernel.org/stable/c/8a1a1255152da4fb934290e7ababc66f24985520CVE reference, Linux
- https://git.kernel.org/stable/c/02ded5a173619b11728b8bf75a3fd995a2c1ff28CVE 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.