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CVE Record

CVE-2024-36922: wifi: iwlwifi: read txq->read_ptr under lock

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-36922 is a Linux kernel flaw in the Intel iwlwifi wireless driver. A race condition can make the driver reclaim the same transmit queue entry twice, triggering a kernel warning. The sources do not define business impact, CVSS severity, or confirmed exploitation.

Executive priority

Treat this as routine kernel maintenance unless local evidence shows Wi-Fi instability or vendor advisories raise severity. There is no sourced evidence of active exploitation or broad business impact in the provided bundle.

Technical view

The bug is in iwlwifi transmit queue handling. Reading txq->read_ptr without holding the lock can return the same value twice, after which reclaim can run against overlapping ranges and double-reclaim an entry. The upstream fix reads txq->read_ptr under lock.

Likely exposure

Exposure is likely limited to Linux systems using the iwlwifi driver, typically Intel Wi-Fi hardware, on affected kernel builds. The CVE data lists Linux kernel versions including 4.19, 5.15.209, 6.1.175, 6.6.31, 6.8.10, and 6.9 as affected.

Exploitation context

The bundle does not show CISA KEV listing, public exploitation, exploit maturity, or attacker requirements. It describes a concurrency bug and resulting WARN_ONCE condition, but does not prove remote, local, privilege escalation, or denial-of-service impact.

Researcher notes

Evidence is narrow. The root cause and fix are clear, but the bundle lacks CVSS, CWE, affected hardware matrix, triggerability details, and security impact analysis. Avoid assuming exploitability beyond the documented iwlwifi locking defect.

Mitigation direction

  • Check Linux vendor or distribution advisories for CVE-2024-36922 coverage.
  • Update affected kernels to builds containing the referenced stable iwlwifi fix.
  • Prioritize endpoints and appliances that use Intel Wi-Fi with iwlwifi loaded.
  • Track kernel changelogs for the listed stable commit identifiers.
  • Monitor fleet logs for repeated iwlwifi transmit queue warnings.

Validation and detection

  • Inventory Linux kernel versions across wireless-capable assets.
  • Confirm whether Intel Wi-Fi hardware and iwlwifi are present.
  • Compare installed kernel changelogs against CVE-2024-36922 and referenced commits.
  • After updating, verify the running kernel includes the vendor backport.
  • Review kernel logs for recurring WARN_ONCE or iwlwifi queue messages.
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-2024-36922 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
LinuxLinux7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6, 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6, 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6, 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6, 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6unaffected
LinuxLinux4.19, 0, 5.15.209, 6.1.175, 6.6.31, 6.8.10, 6.9affected
Weakness

CWE details

No CWE listed

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