Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Fix memory leak due to multiple rx_stats allocation

rx_stats for each arsta is allocated when adding a station.
arsta->rx_stats will be freed when a station is removed.

Redundant allocations are occurring when the same station is added
multiple times. This causes ath12k_mac_station_add() to be called
multiple times, and rx_stats is allocated each time. As a result there
is memory leaks.

Prevent multiple allocations of rx_stats when ath12k_mac_station_add()
is called repeatedly by checking if rx_stats is already allocated
before allocating again. Allocate arsta->rx_stats if arsta->rx_stats
is NULL respectively.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Classification

CVE ID: CVE-2025-38199

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 3.04% (scored less or equal to compared to others)

EPSS Date: 2025-07-06 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-38199
https://git.kernel.org/stable/c/232f962ae5fca98912a719e64b4964a5aec7c99b
https://git.kernel.org/stable/c/c426497fa2055c8005196922e7d29c41d7e0948a

Timeline