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CVE Record

CVE-2022-48957: dpaa2-switch: Fix memory leak in dpaa2_switch_acl_entry_add() and dpaa2_switch_acl_entry_remove()

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: Fix memory leak in dpaa2_switch_acl_entry_add() and dpaa2_switch_acl_entry_remove() The cmd_buff needs to be freed when error happened in dpaa2_switch_acl_entry_add() and dpaa2_switch_acl_entry_remove().

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 memory leak in the dpaa2-switch driver. When ACL entry add or remove operations hit an error, allocated command memory may not be freed. Business impact is likely resource exhaustion risk on affected systems, but the source bundle provides no CVSS score or active exploitation evidence.

Executive priority

Treat this as targeted patch hygiene, not an emergency, unless DPAA2 switching is business-critical in your environment. Prioritize affected network or embedded Linux assets once vendor-fixed kernels are available. Escalate if memory pressure or ACL management failures are observed.

Technical view

The flaw is in dpaa2_switch_acl_entry_add() and dpaa2_switch_acl_entry_remove(). The cmd_buff allocation was not freed on error paths, creating a kernel memory leak. The issue is documented as resolved by Linux stable commits referenced in the CVE source bundle.

Likely exposure

Exposure appears limited to Linux systems using affected kernels and the dpaa2-switch driver path, especially environments that rely on DPAA2 switch ACL management. The bundle lists affected Linux versions but does not provide CPEs, distributions, hardware scope, or downstream package mapping.

Exploitation context

The source bundle does not show KEV listing, public exploitation, exploit maturity, or weaponized use. The likely security concern is memory/resource exhaustion if the vulnerable error paths can be repeatedly reached, but practical exploitability is not established by the provided sources.

Researcher notes

The record lacks CVSS, CWE, CPEs, distro package data, and exploit evidence. Analysis should focus on the dpaa2-switch ACL error paths and whether downstream kernels include the stable commits. Avoid broad Linux exposure claims without confirming driver presence and vendor backports.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Prioritize systems using dpaa2-switch or DPAA2 switch ACL functionality.
  • Check distribution advisories for backported fixes and package names.
  • If patching is delayed, request vendor guidance; no temporary workaround is provided.
  • Monitor affected systems for unusual kernel memory growth or networking instability.

Validation and detection

  • Inventory Linux kernel versions across exposed and embedded systems.
  • Identify hosts where dpaa2-switch is built, loaded, or required.
  • Confirm kernel packages include the referenced stable fix commits.
  • Review vendor advisories for downstream fixed package versions.
  • Check operational logs for repeated ACL management failures.
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-2022-48957 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
1ADP providers
4Source 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux1110318d83e8011c4dfcb2f7dd343bcfb1623c5f, 1110318d83e8011c4dfcb2f7dd343bcfb1623c5f, 1110318d83e8011c4dfcb2f7dd343bcfb1623c5funaffected
LinuxLinux5.13, 0, 5.15.83, 6.0.13, 6.1affected
Weakness

CWE details

No CWE listed

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