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CVE Record

CVE-2025-22054: arcnet: Add NULL check in com20020pci_probe()

In the Linux kernel, the following vulnerability has been resolved: arcnet: Add NULL check in com20020pci_probe() devm_kasprintf() returns NULL when memory allocation fails. Currently, com20020pci_probe() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue and ensure no resources are left allocated.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel availability bug in the ARCnet com20020 PCI probe path. If memory allocation fails, the kernel could dereference NULL and crash. The business impact is service disruption on affected Linux systems, not data theft or privilege escalation based on the supplied CVSS details.

Executive priority

Treat as routine but time-bound kernel maintenance. It has a credible denial-of-service impact, but the supplied evidence does not show remote exploitation, data exposure, or active exploitation. Prioritize high-availability Linux systems during normal patch windows.

Technical view

CVE-2025-22054 is CWE-476 in com20020pci_probe(). devm_kasprintf() can return NULL on allocation failure, but the probe path did not check it. Linux stable fixes add the missing NULL check. CVSS 3.1 is 5.5, local attack vector, low privileges, no confidentiality or integrity impact, high availability impact.

Likely exposure

Exposure is likely limited to affected Linux kernel versions where the ARCnet com20020 PCI driver code is present or reachable. Systems not running affected kernels, or already updated to fixed vendor kernel packages, are not indicated as exposed by the source bundle.

Exploitation context

The source bundle marks KEV as false and provides no evidence of active exploitation. The CVSS vector indicates local access with low privileges and no user interaction. The documented impact is availability loss through a NULL pointer dereference, not remote compromise.

Researcher notes

Evidence is strongest for root cause and fix direction because the CVE references multiple Linux stable commits. Exposure details are incomplete: the bundle lists kernel versions and commits but does not identify specific distributions beyond Debian LTS advisories or operational prerequisites beyond the CVSS vector.

Mitigation direction

  • Update affected Linux kernels through the operating system or distribution vendor.
  • Apply kernel builds containing the referenced Linux stable fixes.
  • For Debian LTS systems, review and apply the cited Debian security updates.
  • Track vendor advisories for affected kernel package status.
  • Prioritize systems where kernel crashes would disrupt critical services.

Validation and detection

  • Inventory Linux kernel versions across production and support environments.
  • Compare kernel versions against the affected and fixed version data in the CVE record.
  • Confirm deployed kernel packages include the CVE-2025-22054 fix or equivalent stable commit.
  • Review vendor advisories for Debian or other distributions in use.
  • Check crash reporting for NULL pointer dereferences in com20020pci_probe().
Prepared
Confidence
high
Sources
12

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

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cwe · low confidence lookup

CWE-476: Exact CWE lookup

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cve · low confidence lookup

CVE-2025-22054 mapping review

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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
2ADP providers
12Source 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-2025-22054Attack 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
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxe38cd53421ed4e37fc99662a0f2a0c567993844f, d54f5a5bc85afd01b0a00689b795e31db54adc15, 75c53a4c43295fb8b09edae45239790db9cc69c3, 8d034da82563a526dbd7e9069bb3f6946403b72c, 5106d7adb74bc6160806b45ffd2321b10ca14ee0, 6b17a597fc2f13aaaa0a2780eb7edb9ae7ac9aea, 6b17a597fc2f13aaaa0a2780eb7edb9ae7ac9aea, 6b17a597fc2f13aaaa0a2780eb7edb9ae7ac9aea, 6b17a597fc2f13aaaa0a2780eb7edb9ae7ac9aea, 2e4ad90b15a7341c2d96d2dc6df6d135d72256b6, 5.4.264, 5.10.204, 5.15.143, 6.1.68, 6.6.7, 4.19.302unaffected
LinuxLinux6.7, 0, 5.4.292, 5.10.236, 5.15.180, 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2, 6.15affected
Weakness

CWE details

CWE-476

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

CWE-476 · source CWE mapping

NULL Pointer Dereference

NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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