---
id: CVE-2025-38199
title: 'wifi: ath12k: Fix memory leak due to multiple rx_stats allocation'
summary: |-
  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 stat…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 <
    2c4b122c75581331177686f68a08981371147d37
  - >-
    Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 <
    232f962ae5fca98912a719e64b4964a5aec7c99b
  - >-
    Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 <
    c426497fa2055c8005196922e7d29c41d7e0948a
  - Linux 6.3
published: '2025-07-04'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:36:50.145Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-38199'
references:
  - url: 'https://git.kernel.org/stable/c/2c4b122c75581331177686f68a08981371147d37'
  - url: 'https://git.kernel.org/stable/c/232f962ae5fca98912a719e64b4964a5aec7c99b'
  - url: 'https://git.kernel.org/stable/c/c426497fa2055c8005196922e7d29c41d7e0948a'
tags:
  - cve.org
epss: 0.00208
epssPercentile: 0.10882
ingestedAt: '2026-10-21T12:48:53.706Z'
---

## Overview

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

## Affected

- `Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 2c4b122c75581331177686f68a08981371147d37`
- `Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 232f962ae5fca98912a719e64b4964a5aec7c99b`
- `Linux >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < c426497fa2055c8005196922e7d29c41d7e0948a`
- `Linux 6.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.