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CVE Record

CVE-2022-48777: mtd: parsers: qcom: Fix kernel panic on skipped partition

In the Linux kernel, the following vulnerability has been resolved: mtd: parsers: qcom: Fix kernel panic on skipped partition In the event of a skipped partition (case when the entry name is empty) the kernel panics in the cleanup function as the name entry is NULL. Rework the parser logic by first checking the real partition number and then allocate the space and set the data for the valid partitions. The logic was also fundamentally wrong as with a skipped partition, the parts number returned was incorrect by not decreasing it for the skipped partitions.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause a kernel panic when the Qualcomm MTD partition parser encounters an empty partition name. For affected systems, the business impact is availability disruption, especially on embedded or appliance-style Linux devices using Qualcomm flash partition layouts.

Executive priority

Treat as a targeted availability risk. Patch during normal kernel maintenance unless exposed devices depend on Qualcomm MTD parsing for critical operations, where earlier remediation is justified.

Technical view

CVE-2022-48777 fixes faulty Qualcomm MTD parser cleanup and partition counting logic. A skipped partition with an empty entry name leaves a NULL name pointer, which can trigger a kernel panic during cleanup. The fix validates real partition count before allocation and setup.

Likely exposure

Likely limited to Linux systems using the Qualcomm MTD partition parser, commonly embedded or device firmware contexts. Exposure depends on kernel version, downstream vendor backports, and whether relevant flash partition data is parsed.

Exploitation context

The provided sources do not report active exploitation, KEV listing, CVSS, or public weaponization. Evidence supports a denial-of-service style kernel panic condition, not data theft or privilege escalation.

Researcher notes

The source bundle lacks CVSS, CWE, exploit prerequisites, and vendor-specific package mappings. Analysis should stay tied to kernel version lineage, parser reachability, and whether stable commits are present in downstream trees.

Mitigation direction

  • Update to a vendor kernel containing the referenced stable fixes.
  • Check Linux distribution or device vendor advisories for backported patches.
  • Prioritize embedded Qualcomm-based systems using MTD partition parsing.
  • Avoid accepting untrusted firmware or flash partition metadata until patched.

Validation and detection

  • Inventory affected Linux kernel versions and downstream vendor build numbers.
  • Confirm whether the Qualcomm MTD parser is present and used.
  • Check vendor changelogs for CVE-2022-48777 or referenced commits.
  • Review crash reports for kernel panics during MTD partition parsing.
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.

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CVE-2022-48777 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
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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux803eb124e1a64e42888542c3444bfe6dac412c7f, 803eb124e1a64e42888542c3444bfe6dac412c7f, 803eb124e1a64e42888542c3444bfe6dac412c7funaffected
LinuxLinux5.12, 0, 5.15.25, 5.16.11, 5.17affected
Weakness

CWE details

No CWE listed

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