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CVE Record

CVE-2022-48788: nvme-rdma: fix possible use-after-free in transport error_recovery work

In the Linux kernel, the following vulnerability has been resolved: nvme-rdma: fix possible use-after-free in transport error_recovery work While nvme_rdma_submit_async_event_work is checking the ctrl and queue state before preparing the AER command and scheduling io_work, in order to fully prevent a race where this check is not reliable the error recovery work must flush async_event_work before continuing to destroy the admin queue after setting the ctrl state to RESETTING such that there is no race .submit_async_event and the error recovery handler itself changing the ctrl state.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48788 is a Linux kernel flaw in the NVMe over RDMA storage transport. A race during error recovery could leave work running against a destroyed admin queue, creating a possible use-after-free. Business urgency depends on whether affected Linux kernels use NVMe over RDMA in production storage paths.

Executive priority

Set a focused remediation track for Linux storage infrastructure using NVMe over RDMA. Broader emergency response is not supported by the provided evidence because severity, exploitability, and active exploitation are not documented.

Technical view

The issue is in nvme-rdma error recovery. The fix flushes async_event_work after setting the controller state to RESETTING and before destroying the admin queue, preventing a race between async event submission and error recovery state changes. Public sources do not provide CVSS, CWE, privilege requirements, or a demonstrated impact beyond possible use-after-free.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with NVMe over RDMA enabled or used. General Linux hosts without this storage transport are less likely to be reachable through this bug, based on the provided description.

Exploitation context

The source bundle does not report active exploitation, and KEV is false. No public exploit status, attack prerequisites, or real-world incident details are provided. Treat exploitation likelihood as unconfirmed rather than absent.

Researcher notes

Useful evidence is limited to the CVE record and Linux stable commit references. The key behavior is a race in async event work versus error recovery queue destruction. Further analysis should inspect vendor backports and local kernel configurations, not assume remote exploitability.

Mitigation direction

  • Apply Linux kernel stable fixes or distribution updates containing the referenced commits.
  • Prioritize systems using NVMe over RDMA for production storage.
  • Check Linux distribution advisories for backported fixes and supported kernel versions.
  • Avoid unsupported kernels where fixed stable updates are unavailable.

Validation and detection

  • Inventory Linux kernel versions across servers and storage nodes.
  • Identify systems using the nvme-rdma transport.
  • Compare installed kernels with vendor-fixed versions or referenced stable commits.
  • Confirm patch status through distribution package metadata or kernel changelogs.
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-2022-48788 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
2ADP 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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux7110230719602852481c2793d054f866b2bf4a2b, 7110230719602852481c2793d054f866b2bf4a2b, 7110230719602852481c2793d054f866b2bf4a2b, 7110230719602852481c2793d054f866b2bf4a2b, 7110230719602852481c2793d054f866b2bf4a2b, 7110230719602852481c2793d054f866b2bf4a2bunaffected
LinuxLinux4.8, 0, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11, 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.