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CVE Record

CVE-2022-48896: ixgbe: fix pci device refcount leak

In the Linux kernel, the following vulnerability has been resolved: ixgbe: fix pci device refcount leak As the comment of pci_get_domain_bus_and_slot() says, it returns a PCI device with refcount incremented, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). In ixgbe_get_first_secondary_devfn() and ixgbe_x550em_a_has_mii(), pci_dev_put() is called to avoid 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-2022-48896 is a Linux kernel issue in the ixgbe driver where PCI device references were not released correctly. The public record describes a refcount leak fix, not a direct compromise path. Business urgency depends on whether affected kernel versions and ixgbe hardware paths exist in your fleet.

Executive priority

Treat this as a targeted kernel maintenance item, not an emergency based on current evidence. Prioritize exposed network infrastructure and high-availability hosts once vendor-fixed kernels are available.

Technical view

The issue is a missing pci_dev_put() after pci_get_domain_bus_and_slot() increments a PCI device refcount. The fix adds pci_dev_put() in ixgbe_get_first_secondary_devfn() and ixgbe_x550em_a_has_mii(). The cited records provide affected Linux kernel version ranges and stable kernel commits, but no CVSS, CWE, or exploit details.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions with the ixgbe driver in use. The source data lists Linux as affected and includes kernel versions around 5.0 through fixed stable releases, but does not identify distributions or package names.

Exploitation context

The provided sources do not report active exploitation, proof-of-concept availability, or KEV listing. The described bug is a PCI device reference leak, so practical impact is not fully established from the supplied evidence.

Researcher notes

Evidence is limited to the Linux kernel fix description and stable commit references. No CVSS, CWE, exploit narrative, or distribution-specific advisory is included in the supplied bundle, so impact assessment should remain conservative.

Mitigation direction

  • Identify Linux systems running affected kernel versions.
  • Prioritize systems using the ixgbe network driver.
  • Apply kernel updates containing the cited stable fixes.
  • Check distribution vendor advisories for packaged kernel status.
  • Plan maintenance carefully for production network hosts.

Validation and detection

  • Inventory kernel versions across Linux assets.
  • Confirm whether ixgbe is loaded or required.
  • Map installed kernels against vendor fixed builds.
  • Review change records for the cited stable commits.
  • Monitor systems for abnormal driver or resource behavior.
Prepared
Confidence
medium
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

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CVE-2022-48896 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
6Source 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
LinuxLinux8fa10ef01260937eb540b4e9bbc3efa023595993, 8fa10ef01260937eb540b4e9bbc3efa023595993, 8fa10ef01260937eb540b4e9bbc3efa023595993, 8fa10ef01260937eb540b4e9bbc3efa023595993, 8fa10ef01260937eb540b4e9bbc3efa023595993unaffected
LinuxLinux5.0, 0, 5.4.229, 5.10.164, 5.15.89, 6.1.7, 6.2affected
Weakness

CWE details

No CWE listed

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