In the Linux kernel, the following vulnerability has been resolved:
wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()
It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. Moreover, if alloc_skb() fails, urb->context becomes NULL but rx_buf is not freed and there can be a memory leak.
The patch removes unnecessary nskb and makes skb processing more clear: it is supposed that ath9k_htc_rx_msg() either frees old skb or passes its managing to another callback function.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-oracle-5.15Upgrade linux-aws-5.4Upgrade linux-fipsUpgrade linux-aws-hweUpgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-raspiUpgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-realtimeUpgrade linuxUpgrade linux-aws-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-lowlatencyUpgrade linux-riscv-5.15Upgrade linux-hwe-5.4Upgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-hweUpgrade linux-gkeopUpgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-gcp-5.15Upgrade linux-azure-5.15Upgrade linux-azureUpgrade linux-azure-4.15Upgrade linux-azure-5.4Upgrade linux-iotUpgrade linux-gcp-4.15Upgrade linux-kvmUpgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-gcpUpgrade linux-oracleUpgrade linux-ibmUpgrade linux-nvidia | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub