# CVE-2025-38199: wifi: ath12k: Fix memory leak due to multiple rx_stats allocation

CVE-2025-38199 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-38199, released July 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-38199
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 4, 2025
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38199

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2025-38199](https://patchblox.com/security/data/fix/linux/debian-cve-2025-38199.md) | Jul 4, 2025 |
| Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-38199](https://patchblox.com/security/data/fix/linux/debian-cve-2025-38199.md) | Jul 4, 2025 |

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