In the Linux kernel, the following vulnerability has been resolved:
ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
Syzbot reported use-after-free Read in ath9k_hif_usb_rx_cb() [0]. The problem was in incorrect htc_handle->drv_priv initialization.
Probable call trace which can trigger use-after-free:
ath9k_htc_probe_device() /* htc_handle->drv_priv = priv; */ ath9k_htc_wait_for_target() <--- Failed ieee80211_free_hw() <--- priv pointer is freed
<IRQ> ... ath9k_hif_usb_rx_cb() ath9k_hif_usb_rx_stream() RX_STAT_INC() <--- htc_handle->drv_priv access
In order to not add fancy protection for drv_priv we can move htc_handle->drv_priv initialization at the end of the ath9k_htc_probe_device() and add helper macro to make all *_STAT_* macros NULL safe, since syzbot has reported related NULL deref in that macros [1]
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linux-lowlatency-hwe-5.15Upgrade linux-realtimeUpgrade linux-lowlatencyUpgrade linux-hwe-5.15Upgrade linux-aws-hweUpgrade linux-ibm-5.4Upgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-aws-5.15Upgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-aws-5.4Upgrade linuxUpgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-raspiUpgrade linux-azureUpgrade linux-oracle-5.4Upgrade linux-kvmUpgrade linux-oracleUpgrade linux-hwe-5.4Upgrade linux-azure-5.15Upgrade linux-hweUpgrade linux-gcpUpgrade linux-awsUpgrade linux-lts-xenialUpgrade linux-gcp-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-gcp-fipsUpgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-azure-5.4Upgrade linux-azure-4.15Upgrade linux-gcp-4.15Upgrade linux-iotUpgrade linux-gcp-5.4Upgrade linux-ibmUpgrade linux-raspi-5.4Upgrade linux-aws-fips | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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