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CVE Record

CVE-2024-26872: RDMA/srpt: Do not register event handler until srpt device is fully setup

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place. Instead, only register the event handler after srpt device initialization is complete.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A race condition in the Linux RDMA SCSI target component can cause kernel memory to be used after it is freed. A locally authenticated, low-privileged user may be able to trigger serious system compromise or disruption. Exposure is concentrated on systems using the SRP target functionality, not every Linux host.

Executive priority

Treat as high priority for systems actively using SRP target services, especially shared or locally accessible infrastructure. For hosts without this functionality, verify non-exposure and handle through normal kernel patching. No supplied evidence supports an emergency response for active exploitation.

Technical view

The srpt event handler could be registered before device initialization completed. If initialization then failed, the partially configured handler could remain and race with cleanup, producing a use-after-free write in srpt_refresh_port(). The stable fix delays handler registration until initialization completes.

Likely exposure

Prioritize Linux storage, virtualization, or appliance systems where RDMA/SRP target functionality is enabled or loaded. The supplied version data identifies affected Linux releases but is ambiguous enough that exact package exposure should be confirmed through distribution or appliance-vendor advisories.

Exploitation context

The CVSS vector describes local access with low privileges, no user interaction, and potentially complete confidentiality, integrity, and availability impact. The supplied record is not in KEV and provides no evidence of active exploitation or a public exploit.

Researcher notes

The vulnerability is a rare initialization and cleanup race involving event-handler lifetime. KASAN observed a use-after-free write in srpt_refresh_port(). The source bundle does not identify a CWE, reliable trigger conditions, or exploitation in the wild. Its affected-version presentation should not be used alone for package-level conclusions.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable stable fix.
  • Check distribution and appliance advisories for exact fixed package versions.
  • Restrict local access on exposed systems until updates are applied.
  • Disable unused RDMA/SRP target functionality according to vendor guidance.

Validation and detection

  • Inventory kernel versions on systems providing RDMA-backed storage services.
  • Confirm whether the srpt component is enabled, loaded, or required.
  • Map installed packages to vendor-fixed releases or referenced stable commits.
  • Review kernel and KASAN logs for srpt initialization errors or use-after-free reports.
  • Retest required RDMA storage operations after updating or disabling functionality.
Prepared
Confidence
medium
Sources
6

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-2024-26872 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

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

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
3ADP providers
10Source 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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-26872Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
other:ssvc
CVECVE Program Container
siemens-SADPADP container
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94d, a42d985bd5b234da8b61347a78dc3057bf7bb94dunaffected
LinuxLinux3.3, 0, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9affected
Weakness

CWE details

No CWE listed

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