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CVE Record

CVE-2022-48767: ceph: properly put ceph_string reference after async create attempt

In the Linux kernel, the following vulnerability has been resolved: ceph: properly put ceph_string reference after async create attempt The reference acquired by try_prep_async_create is currently leaked. Ensure we put it.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-48767 is a Linux kernel Ceph client bug where a reference is not released after an asynchronous create attempt. That can leak kernel-managed resources. The published severity is medium, with local access and low privileges required, so urgency is mainly for systems using affected kernels with Ceph functionality enabled.

Executive priority

Treat this as a routine but real kernel maintenance item. It is not supported as actively exploited by the provided evidence, but Ceph-enabled Linux infrastructure should receive normal security patch priority because kernel resource-management flaws can affect reliability and isolation.

Technical view

The issue is in Linux kernel Ceph code: try_prep_async_create acquires a ceph_string reference that was not properly put after an async create attempt. The CVSS vector is local, low complexity, low privilege, no user interaction, and limited confidentiality, integrity, and availability impact.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions and using Ceph filesystem/client paths. The source bundle identifies Linux as affected, including version references around 5.7, 5.10.96, 5.15.19, 5.16.5, and 5.17, but distribution-specific package status is not provided.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The attack vector is local with low privileges required, so this is not described as remotely internet-exploitable from the supplied evidence.

Researcher notes

The public description is concise and does not provide exploit details, CWE mapping, or distribution advisories. Analysis should focus on kernel Ceph async create handling and whether downstream vendors backported the stable commits into supported kernel packages.

Mitigation direction

  • Check your Linux distribution advisory for CVE-2022-48767 package status.
  • Update to a vendor kernel containing the referenced stable Ceph fix commits.
  • Prioritize Ceph-enabled hosts before systems without Ceph client usage.
  • Track exceptions where kernel updates require maintenance windows.
  • Monitor vendor security pages for backported fix confirmation.

Validation and detection

  • Inventory kernel versions across Linux hosts.
  • Identify systems with Ceph filesystem or client functionality in use.
  • Map installed kernel packages to distribution CVE status.
  • Confirm the deployed kernel includes a referenced stable fix commit.
  • Document any unfixed Ceph-enabled hosts as residual risk.
Prepared
Confidence
medium
Sources
6

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-2022-48767 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

1CVSS vectors
3Timeline events
2ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L1.83.4CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2022-48767Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux9a8d03ca2e2c334d08ee91a3e07dcce31a02fdc6, 9a8d03ca2e2c334d08ee91a3e07dcce31a02fdc6, 9a8d03ca2e2c334d08ee91a3e07dcce31a02fdc6, 9a8d03ca2e2c334d08ee91a3e07dcce31a02fdc6unaffected
LinuxLinux5.7, 0, 5.10.96, 5.15.19, 5.16.5, 5.17affected
Weakness

CWE details

No CWE listed

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