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CVE Record

CVE-2024-47724: wifi: ath11k: use work queue to process beacon tx event

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: use work queue to process beacon tx event Commit 3a415daa3e8b ("wifi: ath11k: add P2P IE in beacon template") from Feb 28, 2024 (linux-next), leads to the following Smatch static checker warning: drivers/net/wireless/ath/ath11k/wmi.c:1742 ath11k_wmi_p2p_go_bcn_ie() warn: sleeping in atomic context The reason is that ath11k_bcn_tx_status_event() will directly call might sleep function ath11k_wmi_cmd_send() during RCU read-side critical sections. The call trace is like: ath11k_bcn_tx_status_event() -> rcu_read_lock() -> ath11k_mac_bcn_tx_event() -> ath11k_mac_setup_bcn_tmpl() …… -> ath11k_wmi_bcn_tmpl() -> ath11k_wmi_cmd_send() -> rcu_read_unlock() Commit 886433a98425 ("ath11k: add support for BSS color change") added the ath11k_mac_bcn_tx_event(), commit 01e782c89108 ("ath11k: fix warning of RCU usage for ath11k_mac_get_arvif_by_vdev_id()") added the RCU lock to avoid warning but also introduced this BUG. Use work queue to avoid directly calling ath11k_mac_bcn_tx_event() during RCU critical sections. No need to worry about the deletion of vif because cancel_work_sync() will drop the work if it doesn't start or block vif deletion until the running work is done. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30

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 ath11k Wi-Fi driver flaw can invoke an operation that may sleep while the kernel is in a protected atomic context. This violates kernel execution rules and may cause serious security or stability consequences. The supplied CVSS score is 8.8, although the sources do not demonstrate practical compromise or exploitation.

Executive priority

Prioritize vendor-supported kernel updates for endpoints, appliances, and infrastructure actively using ath11k Wi-Fi. Urgency is high because of the 8.8 rating and kernel-level location, but emergency incident response is not supported without evidence of exploitation or confirmed exposure.

Technical view

During an ath11k beacon transmission event, an RCU read-side critical section can reach ath11k_wmi_cmd_send, which may sleep. The correction defers beacon processing to a work queue and uses cancel_work_sync to coordinate virtual-interface deletion. The supplied CVSS vector rates adjacent attack complexity low and potential confidentiality, integrity, and availability impacts high.

Likely exposure

Exposure is limited to Linux systems using the ath11k wireless driver and affected beacon-processing code. The bundle contains version data spanning Linux 6.10 through 6.12, but its flattened version list does not clearly distinguish vulnerable ranges from fixed endpoints. Confirm the exact status with the kernel or distribution vendor.

Exploitation context

The bundle provides no evidence of active exploitation, and the CVE is not listed as KEV. The CVSS vector models adjacent-network reachability without privileges or user interaction, but the technical record describes a static-checker finding and corrective patch rather than a demonstrated attack.

Researcher notes

The problematic path holds rcu_read_lock while beacon-template setup reaches ath11k_wmi_cmd_send, which may sleep. Work-queue deferral moves processing outside the RCU critical section; cancel_work_sync protects virtual-interface deletion. The sources provide no CWE mapping, proof of exploitation, or demonstrated security impact, and the supplied version representation is ambiguous.

Mitigation direction

  • Inventory Linux systems that load ath11k and compare their kernels with vendor advisories and the referenced stable commits.
  • Apply a vendor-supported kernel release containing the work-queue fix using normal change-control and rollback procedures.
  • If patching is delayed, follow distribution-vendor guidance and consider limiting use of affected ath11k wireless functionality.
  • Reboot into the updated kernel and confirm the intended kernel is running.

Validation and detection

  • Confirm whether each system loads ath11k or contains relevant Qualcomm Wi-Fi hardware.
  • Map installed kernel packages to vendor advisories and the referenced stable commit history.
  • Verify the kernel source contains the work-queue deferral and virtual-interface cancellation handling.
  • Review kernel logs for sleep-in-atomic, RCU, ath11k, or beacon-processing warnings after validation testing.
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-2024-47724 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
1ADP 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-2024-47724Attack 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux3a415daa3e8ba65f1cc976c172a5ab69bdc17e69, 3a415daa3e8ba65f1cc976c172a5ab69bdc17e69, 3a415daa3e8ba65f1cc976c172a5ab69bdc17e69unaffected
LinuxLinux6.10, 0, 6.10.13, 6.11.2, 6.12affected
Weakness

CWE details

No CWE listed

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