CVE-2023-53225: spi: imx: Don't skip cleanup in remove's error path
In the Linux kernel, the following vulnerability has been resolved:
spi: imx: Don't skip cleanup in remove's error path
Returning early in a platform driver's remove callback is wrong. In this
case the dma resources are not released in the error path. this is never
retried later and so this is a permanent leak. To fix this, only skip
hardware disabling if waking the device fails.
Security readout for executives and security teams
Plain-English summary
CVE-2023-53225 is a Linux kernel resource leak in the spi-imx platform driver's remove path. An early return can leave DMA resources unreleased permanently if device wake fails, potentially degrading availability. It requires local low-privileged access per CVSS; no confidentiality or integrity impact is reported.
Executive priority
Treat this as a moderate availability risk, strongest for Linux systems using the affected SPI driver path. It is not marked as actively exploited, but kernel availability issues can be operationally significant on embedded or appliance-like systems.
Technical view
The fix changes remove callback handling so cleanup is not skipped on error; only hardware disabling is skipped when wake fails. The weakness is CWE-401. CVSS 3.1 is 5.5: local, low complexity, low privileges, no user interaction, unchanged scope, high availability impact.
Likely exposure
Exposure is most likely on Linux kernels in the listed affected ranges when the spi-imx driver is present and used. Generic servers without that driver or hardware path may be unaffected, but kernel build configuration and loaded modules must be checked.
Exploitation context
No provided source says this is actively exploited; KEV is false. The CVSS vector indicates local low-privileged access is needed. The practical impact is denial of service through permanent DMA resource leakage in the driver remove error path.
Researcher notes
Evidence is limited to the CVE record and kernel stable commits. The issue is a cleanup flaw in remove error handling, not a remotely reachable network vulnerability based on the provided CVSS vector and description.
Mitigation direction
Prioritize vendor kernel updates containing the referenced stable commits.
Check Linux distribution advisories for package-specific fixed kernel versions.
Reduce exposure to local untrusted users on affected systems.
Avoid unloading or rebinding affected drivers on sensitive production systems until patched.
Monitor kernel logs and availability symptoms on affected embedded or hardware-specific deployments.
Validation and detection
Inventory Linux kernel versions against the affected and fixed ranges in the CVE record.
Confirm whether the spi-imx driver is built, loaded, or used on each system.
Review distribution kernel changelogs for the referenced stable commit IDs.
Validate remediation in staging before broad kernel rollout.
Document systems where hardware or configuration makes the driver unreachable.
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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cwe · low confidence lookup
CWE-401: Exact CWE lookup
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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.
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CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-401 · source CWE mapping
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.