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CVE-2023-52798 is a use-after-free vulnerability in the Linux kernel ath11k Wi-Fi driver. DFS radar-event handling calls ath11k_mac_get_ar_by_pdev_id() to access active physical-device state protected by Read-Copy-Update (RCU), but did not execute within an RCU read-side critical section. Concurrent removal or reclamation of the referenced device state can therefore leave the handler operating on freed memory. The upstream correction wraps the affected lookup and handling path in an RCU read-side critical section.
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A specific vulnerability referenced in a Unity Linux local security check advisory (UTSA-2025-001466). The content identifies the CVE and indicates a patch is available, but does not describe the underlying flaw type.
Linux kernel ath11k Wi-Fi driver locking flaw.
A resolved Linux kernel Wi-Fi driver vulnerability in ath11k involving locking for DFS radar events. An automated assessment characterized its approximate impact as moderate and identified UAF-related patch indicators.
A low-severity Linux kernel use-after-free vulnerability in the ath11k Wi-Fi driver's DFS radar event handling. The missing RCU read-side lock can lead to memory-safety issues and, in Red Hat's assessment, primarily a local denial of service with high privileges required.
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Cross-references every affected SKU, including bundled OEM variants.
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