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CVE Record

CVE-2023-53470: ionic: catch failure from devlink_alloc

In the Linux kernel, the following vulnerability has been resolved: ionic: catch failure from devlink_alloc Add a check for NULL on the alloc return. If devlink_alloc() fails and we try to use devlink_priv() on the NULL return, the kernel gets very unhappy and panics. With this fix, the driver load will still fail, but at least it won't panic the kernel.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-53470 is a Linux kernel bug in the ionic network driver. If memory allocation for devlink fails during driver loading, the kernel can panic instead of failing safely. The practical impact is system availability, not data theft. Public sources do not show active exploitation.

Executive priority

Treat as a targeted availability risk. Patch during normal kernel maintenance unless affected systems depend on the ionic driver in production, where earlier remediation is prudent. No source indicates active exploitation.

Technical view

The ionic driver failed to check whether devlink_alloc() returned NULL. It could then pass the NULL value to devlink_priv(), causing a kernel panic. The upstream fix adds a NULL check so driver load fails cleanly. The CVE record lists Linux kernel versions including 5.4, 5.15.112, 6.1.29, 6.2.16, 6.3.3, and 6.4 as affected.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel builds where the ionic driver is present and may be loaded. Systems without this driver or with vendor kernels containing the referenced stable fixes are less likely exposed. Distribution backports may change version-based assessment.

Exploitation context

The described failure occurs during ionic driver load when devlink_alloc() fails. Sources indicate a kernel panic denial-of-service condition, but provide no evidence of remote exploitation, privilege escalation, public exploit code, or CISA KEV listing.

Researcher notes

Evidence is limited to the CVE description and Linux stable commits. No CVSS, CWE, exploitability details, or distribution-specific affected package matrix is provided. Validate against vendor-maintained kernel trees because stable fixes may be backported without changing upstream version numbers.

Mitigation direction

  • Update to a kernel build that includes the referenced stable fix commits.
  • Check Linux distribution advisories for backported fixes and package-specific guidance.
  • Prioritize affected systems where the ionic driver is installed or used.
  • If uncertain, ask the OS vendor whether your kernel contains the fix.

Validation and detection

  • Inventory Linux kernel versions across servers and appliances.
  • Identify systems where the ionic driver is available, loaded, or required.
  • Compare installed kernels against vendor advisories and the referenced stable commits.
  • Confirm patched systems load or reject the driver without kernel panic 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.

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CVE-2023-53470 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
6Source 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
LinuxLinuxdf69ba43217d3cf4215c83c0627ce98a26e56e7c, df69ba43217d3cf4215c83c0627ce98a26e56e7c, df69ba43217d3cf4215c83c0627ce98a26e56e7c, df69ba43217d3cf4215c83c0627ce98a26e56e7c, df69ba43217d3cf4215c83c0627ce98a26e56e7cunaffected
LinuxLinux5.4, 0, 5.15.112, 6.1.29, 6.2.16, 6.3.3, 6.4affected
Weakness

CWE details

No CWE listed

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