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CVE Record

CVE-2024-36921: wifi: iwlwifi: mvm: guard against invalid STA ID on removal

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: guard against invalid STA ID on removal Guard against invalid station IDs in iwl_mvm_mld_rm_sta_id as that would result in out-of-bounds array accesses. This prevents issues should the driver get into a bad state during error handling.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux Wi-Fi driver flaw can access memory outside an intended array when removing a station with an invalid identifier. It occurs when the driver enters a bad state during error handling. Successful exploitation could compromise confidentiality, integrity, and availability, although practical attacker control is not established by the supplied evidence.

Executive priority

Prioritize remediation for laptops, workstations, and appliances confirmed to use the affected driver and kernel. The high CVSS score warrants prompt action, but the absence of known exploitation and uncertainty around practical triggering do not support an emergency organization-wide response without confirmed exposure.

Technical view

CVE-2024-36921 affects the Linux iwlwifi MVM driver. Missing validation in iwl_mvm_mld_rm_sta_id can permit an out-of-bounds array access during station removal. The supplied CVSS 3.1 score is 8.8, with adjacent access, low complexity, no privileges, and no user interaction. Upstream stable fixes are referenced.

Likely exposure

Exposure is most likely on systems using the iwlwifi MVM driver with an affected kernel. The record lists Linux 6.4, 6.6.31, 6.8.10, and 6.9, but also contains ambiguous version data. Confirm applicability using distribution advisories and package changelogs rather than relying solely on this list.

Exploitation context

The supplied record is not in CISA KEV, and no cited source reports active exploitation. The CVSS vector describes adjacent-network reachability, but the evidence does not establish a reliable attacker-controlled trigger. Treat exploitation status and real-world exploitability as unconfirmed.

Researcher notes

The vulnerable condition is an invalid station identifier reaching removal logic and causing an out-of-bounds access during error handling. The sources do not specify the exact memory operation, practical trigger sequence, or demonstrated security impact. Version metadata includes duplicates and an anomalous "0," reducing confidence in precise range interpretation.

Mitigation direction

  • Consult the Linux distribution or device vendor advisory for corrected package versions.
  • Upgrade to a supported kernel package incorporating the referenced upstream stable fix.
  • Prioritize affected systems that actively load the iwlwifi MVM driver.
  • Follow vendor guidance where immediate kernel replacement is operationally constrained.

Validation and detection

  • Inventory running kernel versions and identify systems loading the iwlwifi MVM driver.
  • Compare installed packages against distribution advisories and corrected package versions.
  • Confirm vendor source or changelogs incorporate the applicable referenced stable commit.
  • After updating, verify the new kernel is running and wireless functionality remains stable.
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

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CVE-2024-36921 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:L/PR:N/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
2ADP providers
4Source 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
8.8CVSS 3.1HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2024-36921Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux006c152ac9e56ac7871efa995854c3ff8cf6915a, 006c152ac9e56ac7871efa995854c3ff8cf6915a, 006c152ac9e56ac7871efa995854c3ff8cf6915aunaffected
LinuxLinux6.4, 0, 6.6.31, 6.8.10, 6.9affected
Weakness

CWE details

No CWE listed

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