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CVE Record

CVE-2022-48773: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create

In the Linux kernel, the following vulnerability has been resolved: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create If there are failures then we must not leave the non-NULL pointers with the error value, otherwise `rpcrdma_ep_destroy` gets confused and tries free them, resulting in an Oops.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel reliability flaw in the xprtrdma component. When endpoint creation fails, bad pointer cleanup can trigger a kernel Oops. Business impact is most likely service disruption on systems using affected kernel builds, but the provided sources do not establish severity, exploitability, or active exploitation.

Executive priority

Treat as a targeted kernel maintenance issue unless your environment relies on xprtrdma/RPC-over-RDMA. No source provided evidence of exploitation, but affected production kernels should be patched through normal vulnerability management.

Technical view

The bug is in rpcrdma_ep_create error handling. Failed setup can leave non-NULL pointers holding error values, causing rpcrdma_ep_destroy to mis-handle cleanup and Oops. The record names Linux kernel as affected and links stable commits resolving the issue.

Likely exposure

Exposure appears limited to Linux systems running affected kernel builds with xprtrdma/RPC-over-RDMA code reachable in their workload. The source bundle lists Linux versions and stable commit references, but exact distro package impact requires vendor kernel mapping.

Exploitation context

The supplied sources do not report active exploitation, public exploit activity, CVSS scoring, or KEV inclusion. The described outcome is a kernel Oops during error cleanup, which points primarily to availability risk.

Researcher notes

Evidence is narrow: the CVE description explains the faulty error-path pointer state and cleanup Oops, but provides no CVSS, CWE, exploit detail, or downstream advisory mapping. Validate branch and distro applicability before assigning operational priority.

Mitigation direction

  • Update affected Linux kernels to builds containing the linked stable fixes.
  • Check distribution advisories for exact package versions and backports.
  • Prioritize systems using xprtrdma or RPC-over-RDMA functionality.
  • If no vendor advisory exists, follow upstream stable kernel guidance.

Validation and detection

  • Inventory Linux kernel versions and vendor package releases.
  • Map installed kernels against the CVE record and linked stable commits.
  • Identify hosts using xprtrdma or RPC-over-RDMA workloads.
  • Review system logs for kernel Oops events involving rpcrdma cleanup.
Prepared
Confidence
medium
Sources
6

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-2022-48773 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
5Source 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
LinuxLinux85cd8e2b78eea7374927750ffec60bf047f8f90b, 85cd8e2b78eea7374927750ffec60bf047f8f90b, 85cd8e2b78eea7374927750ffec60bf047f8f90b, 85cd8e2b78eea7374927750ffec60bf047f8f90bunaffected
LinuxLinux5.7, 0, 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.