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CVE Record

CVE-2022-50155: mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset

In the Linux kernel, the following vulnerability has been resolved: mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset of_find_node_by_path() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50155 is a Linux kernel resource leak. A specific MTD partition parser can keep an internal device-tree reference longer than intended. The public record does not provide CVSS, real-world exploitation, or named impacted devices, so business urgency depends on whether affected kernel code is present in deployed systems.

Executive priority

Handle through normal kernel patch governance unless your environment includes embedded or firmware Linux builds using this parser. Escalate only if vendor guidance shows affected production devices or operational instability tied to the leak.

Technical view

The issue is a missing of_node_put() after of_find_node_by_path() in bcm4908_partitions_fw_offset within the Linux MTD ofpart parser. This creates a reference-count leak. Stable kernel commits are cited as fixes, but the source bundle does not describe attacker prerequisites, impact severity, or exploitability.

Likely exposure

Exposure appears limited to Linux kernels containing the affected MTD ofpart BCM4908 parser path. Embedded Linux, firmware, or network-device builds using MTD partitions are more plausible candidates. The sources do not identify specific appliances, distributions, or cloud workloads.

Exploitation context

The CVE is not marked KEV, and the provided sources do not claim active exploitation or public exploit availability. The evidence describes a resolved kernel bug, not a demonstrated attack path.

Researcher notes

Evidence is narrow: the public text identifies a refcount leak and stable commits, but not severity, triggerability, or security impact boundaries. Validate against actual kernel source and configuration before rating local risk.

Mitigation direction

  • Check vendor or distribution kernel guidance for CVE-2022-50155.
  • Update affected kernels to versions containing the cited stable fixes.
  • Prioritize embedded Linux builds using MTD ofpart or BCM4908-related partition parsing.
  • Track backported fixes by commit, not version string alone.

Validation and detection

  • Inventory deployed Linux kernel versions and vendor kernel branches.
  • Confirm whether the running kernel includes the cited fix commits.
  • Review affected builds for MTD ofpart and BCM4908 parser usage.
  • Document systems where vendor guidance is unavailable or inconclusive.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2022-50155 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
0ADP providers
5Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxbb17230c61a6424b622e92006ec52ba23aa5a967, bb17230c61a6424b622e92006ec52ba23aa5a967, bb17230c61a6424b622e92006ec52ba23aa5a967, bb17230c61a6424b622e92006ec52ba23aa5a967unaffected
LinuxLinux5.13, 0, 5.15.61, 5.18.18, 5.19.2, 6.0affected
Weakness

CWE details

No CWE listed

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