{"id":"CVE-2024-47724","summary":"wifi: ath11k: use work queue to process beacon tx event","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: use work queue to process beacon tx event\n\nCommit 3a415daa3e8b (\"wifi: ath11k: add P2P IE in beacon template\")\nfrom Feb 28, 2024 (linux-next), leads to the following Smatch static\nchecker warning:\n\ndrivers/net/wireless/ath/ath11k/wmi.c:1742 ath11k_wmi_p2p_go_bcn_ie()\nwarn: sleeping in atomic context\n\nThe reason is that ath11k_bcn_tx_status_event() will directly call might\nsleep function ath11k_wmi_cmd_send() during RCU read-side critical\nsections. The call trace is like:\n\nath11k_bcn_tx_status_event()\n-\u003e rcu_read_lock()\n-\u003e ath11k_mac_bcn_tx_event()\n\t-\u003e ath11k_mac_setup_bcn_tmpl()\n\t……\n\t\t-\u003e ath11k_wmi_bcn_tmpl()\n\t\t\t-\u003e ath11k_wmi_cmd_send()\n-\u003e rcu_read_unlock()\n\nCommit 886433a98425 (\"ath11k: add support for BSS color change\") added the\nath11k_mac_bcn_tx_event(), commit 01e782c89108 (\"ath11k: fix warning\nof RCU usage for ath11k_mac_get_arvif_by_vdev_id()\") added the RCU lock\nto avoid warning but also introduced this BUG.\n\nUse work queue to avoid directly calling ath11k_mac_bcn_tx_event()\nduring RCU critical sections. No need to worry about the deletion of vif\nbecause cancel_work_sync() will drop the work if it doesn't start or\nblock vif deletion until the running work is done.\n\nTested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30","modified":"2026-04-02T12:20:25.421641Z","published":"2024-10-21T12:13:58.267Z","related":["USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47724.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/177b49dbf9c1d8f9f25a22ffafa416fc2c8aa6a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6db232905e094e64abff1f18249905d068285e09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dbd51da69dda1137723b8f66460bf99a9dac8dd2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47724.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-47724"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3a415daa3e8ba65f1cc976c172a5ab69bdc17e69"},{"fixed":"dbd51da69dda1137723b8f66460bf99a9dac8dd2"},{"fixed":"6db232905e094e64abff1f18249905d068285e09"},{"fixed":"177b49dbf9c1d8f9f25a22ffafa416fc2c8aa6a3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47724.json"}}],"schema_version":"1.7.5"}