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CVE Record

CVE-2022-48905: ibmvnic: free reset-work-item when flushing

In the Linux kernel, the following vulnerability has been resolved: ibmvnic: free reset-work-item when flushing Fix a tiny memory leak when flushing the reset work queue.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2022-48905 is a Linux kernel issue in the IBM virtual NIC driver. The published description says it fixes a tiny memory leak when flushing a reset work queue. The available sources do not show remote code execution, privilege escalation, data exposure, or active exploitation. Business urgency is low unless you operate affected Linux kernels on IBM virtualized networking.

Executive priority

Treat as routine maintenance. Patch through normal kernel update cycles, with attention to IBM virtual NIC environments. There is no source-supported evidence of active exploitation or severe business impact.

Technical view

The issue is in the Linux kernel ibmvnic driver. A reset work item was not freed when the reset work queue was flushed, causing a small memory leak. Kernel stable commits are listed as the resolution. The CVE record provides no CVSS score, CWE, exploitability details, or operational impact beyond the memory leak.

Likely exposure

Exposure appears limited to Linux systems using the ibmvnic driver, commonly associated with IBM virtual NIC environments. The source bundle lists Linux kernel versions around 4.18 through 5.17 as affected, but the version data is not fully normalized. Confirm against your distribution kernel advisories and the referenced stable commits.

Exploitation context

No active exploitation is reported in the provided sources, and the CVE is not marked in KEV. The public description frames this as a small memory leak fix, not an attacker-controlled exploit path. Evidence is insufficient to claim practical exploitability or meaningful service impact.

Researcher notes

The record describes a resolved kernel memory leak with limited metadata. No CVSS, CWE, exploit narrative, or KEV signal is provided. Analysis should focus on affected kernel lineage, ibmvnic usage, and whether downstream vendors backported the stable commits.

Mitigation direction

  • Identify Linux systems using the ibmvnic driver.
  • Check your Linux distribution advisory for CVE-2022-48905 coverage.
  • Update to a vendor kernel containing the referenced stable fixes.
  • Prioritize IBM virtualized networking hosts if ibmvnic is present.

Validation and detection

  • Inventory kernel versions across IBM virtualized Linux workloads.
  • Check whether ibmvnic is loaded or built into the running kernel.
  • Compare installed kernel packages with vendor advisories for this CVE.
  • Confirm the applicable upstream stable commit is included in your kernel source or package changelog.
Prepared
Confidence
medium
Sources
8

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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CVE-2022-48905 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
1ADP providers
7Source links

SSVC decision data

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

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
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux2770a7984db588913e11a6dfcfe3461dbba9b7b2, 2770a7984db588913e11a6dfcfe3461dbba9b7b2, 2770a7984db588913e11a6dfcfe3461dbba9b7b2, 2770a7984db588913e11a6dfcfe3461dbba9b7b2, 2770a7984db588913e11a6dfcfe3461dbba9b7b2, 2770a7984db588913e11a6dfcfe3461dbba9b7b2unaffected
LinuxLinux4.18, 0, 4.19.233, 5.4.183, 5.10.104, 5.15.27, 5.16.13, 5.17affected
Weakness

CWE details

No CWE listed

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