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CVE Record

CVE-2022-48778: mtd: rawnand: gpmi: don't leak PM reference in error path

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: gpmi: don't leak PM reference in error path If gpmi_nfc_apply_timings() fails, the PM runtime usage counter must be dropped.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48778 is a Linux kernel driver bug where an error path can leave a power-management reference held. The public record does not provide CVSS, CWE, or impact detail. Business urgency depends on whether your fleet uses the affected raw NAND GPMI driver path.

Executive priority

Medium tracking priority, not emergency priority, unless your environment relies on this Linux raw NAND driver. The missing severity and exploit evidence mean remediation should follow normal kernel update cycles, with higher urgency for affected embedded or appliance platforms.

Technical view

The issue is in Linux mtd rawnand gpmi code. If gpmi_nfc_apply_timings() fails, the PM runtime usage counter was not dropped. Stable kernel commits address the missing cleanup in that error path. The provided sources do not describe privilege requirements, exploitability, or security impact.

Likely exposure

Likely limited to Linux systems that include and use the mtd rawnand gpmi raw NAND driver. Exposure for ordinary workloads is unclear from the supplied sources. Validate against vendor kernel builds and hardware platforms rather than assuming broad Linux exposure.

Exploitation context

The provided bundle marks KEV as false and gives no cited evidence of active exploitation or public weaponization. No exploit path is described in the sources. Treat this as a patch-management and platform-validation item unless vendor guidance states otherwise.

Researcher notes

Evidence is sparse. The CVE text identifies a PM runtime reference leak when gpmi_nfc_apply_timings() fails, fixed by stable commits. The bundle does not establish affected version ranges beyond listed Linux kernel references, security impact, or attacker-controlled triggering conditions.

Mitigation direction

  • Check Linux distribution or device-vendor advisories for CVE-2022-48778 coverage.
  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Prioritize systems using the mtd rawnand gpmi driver path.
  • If no vendor fix is available, request explicit guidance from the kernel or device vendor.

Validation and detection

  • Inventory kernels and devices that include the Linux rawnand gpmi driver.
  • Verify vendor kernel changelogs reference CVE-2022-48778 or the stable commits.
  • Confirm whether affected platforms actually exercise gpmi_nfc_apply_timings().
  • Record KEV status as false based on the supplied bundle.
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.

ATT&CK lookup starting points

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CVE-2022-48778 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
6Source 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
LinuxLinux29218853877a748a2ca41d9957a84b2d6a7f56a7, 538a5e208e7d29e8b3cb1d79bbb757e8c763b680, 0fe08bf9909f02eb487af2cc829f2853ea69bc96, c447696e2f825df7800b0630352bea2d45d09baa, f53d4c109a666bf1a4883b45d546fba079258717unaffected
LinuxLinux5.4.174, 5.10.94, 5.15.17, 5.16.3unaffected
Weakness

CWE details

No CWE listed

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