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CVE Record

CVE-2022-50023: dmaengine: dw-axi-dmac: ignore interrupt if no descriptor

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-axi-dmac: ignore interrupt if no descriptor If the channel has no descriptor and the interrupt is raised then the kernel will OOPS. Check the result of vchan_next_desc() in the handler axi_chan_block_xfer_complete() to avoid the error happening.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50023 is a Linux kernel bug in the dw-axi-dmac DMA driver. If an interrupt occurs when no transfer descriptor exists, the kernel can OOPS, potentially disrupting the affected system. Public sources do not provide a CVSS score or evidence of active exploitation.

Executive priority

Treat as a targeted stability risk rather than a broadly exploitable emergency. Prioritize embedded, appliance, or infrastructure Linux systems using this DMA driver, especially where unexpected crashes affect availability.

Technical view

The flaw is in dmaengine dw-axi-dmac handling, specifically axi_chan_block_xfer_complete(). The fix checks vchan_next_desc() before using a descriptor, avoiding a kernel OOPS when an interrupt arrives without a pending descriptor. The CVE record lists Linux as affected and references stable kernel commits.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the dw-axi-dmac DMA driver in use. The provided data lists Linux versions including 4.17, 5.15.63, 5.19.4, and 6.0, but distro-specific package status must be confirmed with vendors.

Exploitation context

No cited source reports active exploitation, and the CVE is not listed as KEV. The documented impact is kernel OOPS from an unexpected interrupt state. Practical exploitability depends on whether an attacker or device condition can trigger that driver path.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit report, or detailed trigger conditions are provided. Analysis should focus on kernel version lineage, driver presence, and whether local hardware or interrupt conditions can reach the fixed code path.

Mitigation direction

  • Check Linux vendor advisories for CVE-2022-50023 package status.
  • Update to a kernel containing the referenced stable fixes.
  • Prioritize systems using dw-axi-dmac or affected embedded hardware.
  • If patching is delayed, assess whether the driver is required.

Validation and detection

  • Inventory Linux kernel versions across affected assets.
  • Confirm whether dw-axi-dmac is built, loaded, or used.
  • Verify kernel source or package includes the referenced fix commits.
  • Review kernel logs for OOPS involving dw-axi-dmac or axi_chan_block_xfer_complete().
Prepared
Confidence
medium
Sources
5

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-2022-50023 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
0ADP providers
4Source links

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux1fe20f1b84548bbcf48b6659ea171cd46618ea3a, 1fe20f1b84548bbcf48b6659ea171cd46618ea3a, 1fe20f1b84548bbcf48b6659ea171cd46618ea3aunaffected
LinuxLinux4.17, 0, 5.15.63, 5.19.4, 6.0affected
Weakness

CWE details

No CWE listed

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