LiveActive security incident?Get immediate response
CVE Record

CVE-2022-49211: mips: cdmm: Fix refcount leak in mips_cdmm_phys_base

In the Linux kernel, the following vulnerability has been resolved: mips: cdmm: Fix refcount leak in mips_cdmm_phys_base The of_find_compatible_node() function returns a node pointer with refcount incremented, We should use of_node_put() on it when done Add the missing of_node_put() to release the refcount.

MediumCVSS 5.5Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This CVE is a Linux kernel resource-management bug in MIPS CDMM handling. A missing reference release can leak kernel object references, potentially degrading availability. The published CVSS score is medium, and the attack model requires local low-privileged access.

Executive priority

Treat as a routine but real availability-risk kernel update. It is not currently evidenced as actively exploited, but systems with local multi-user access should be prioritized because the reported impact is high availability loss.

Technical view

In mips_cdmm_phys_base, of_find_compatible_node() increments a device-tree node reference count. The fix adds the missing of_node_put() when done. The reported impact is availability only, with CVSS 3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Likely exposure

Exposure is most relevant to Linux systems using affected MIPS kernel code. The source bundle lists Linux kernel versions including 5.9, 5.10.110, 5.15.33, 5.16.19, 5.17.2, and 5.18 as affected or boundary versions.

Exploitation context

The bundle does not show CISA KEV listing or public active exploitation. The CVSS vector indicates exploitation requires local access with low privileges and does not require user interaction. No exploit details are provided in the sources.

Researcher notes

Evidence is limited to the CVE description, CVSS metadata, and kernel stable fix references. The root cause is a reference-count leak, not a confidentiality or integrity issue. No CWE, exploit status, or vendor-specific package fix data is included in the bundle.

Mitigation direction

  • Inventory Linux systems using MIPS kernels or MIPS CDMM support.
  • Apply a vendor kernel update containing the referenced stable fixes.
  • If using custom kernels, confirm the of_node_put() fix is present.
  • Prioritize systems with untrusted local users or shared shell access.
  • Track Linux distribution advisories for packaged kernel availability.

Validation and detection

  • Map deployed kernel versions against the affected versions in the CVE record.
  • Check whether the referenced stable commit is included in your kernel tree.
  • Confirm MIPS CDMM code is relevant to the deployed platform.
  • Review kernel package changelogs for CVE-2022-49211 or the fix title.
  • Monitor local-user-facing systems for availability anomalies until patched.
Prepared
Confidence
high
Sources
7

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

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 · low confidence lookup

CVE-2022-49211 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
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

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.

1CVSS vectors
3Timeline events
1ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-49211Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux2121aa3e2312ccc1d6299154dc4f07a6ab8beee2, 2121aa3e2312ccc1d6299154dc4f07a6ab8beee2, 2121aa3e2312ccc1d6299154dc4f07a6ab8beee2, 2121aa3e2312ccc1d6299154dc4f07a6ab8beee2, 2121aa3e2312ccc1d6299154dc4f07a6ab8beee2unaffected
LinuxLinux5.9, 0, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.