{"id":"CVE-2024-56599","summary":"wifi: ath10k: avoid NULL pointer error during sdio remove","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath10k: avoid NULL pointer error during sdio remove\n\nWhen running 'rmmod ath10k', ath10k_sdio_remove() will free sdio\nworkqueue by destroy_workqueue(). But if CONFIG_INIT_ON_FREE_DEFAULT_ON\nis set to yes, kernel panic will happen:\nCall trace:\n destroy_workqueue+0x1c/0x258\n ath10k_sdio_remove+0x84/0x94\n sdio_bus_remove+0x50/0x16c\n device_release_driver_internal+0x188/0x25c\n device_driver_detach+0x20/0x2c\n\nThis is because during 'rmmod ath10k', ath10k_sdio_remove() will call\nath10k_core_destroy() before destroy_workqueue(). wiphy_dev_release()\nwill finally be called in ath10k_core_destroy(). This function will free\nstruct cfg80211_registered_device *rdev and all its members, including\nwiphy, dev and the pointer of sdio workqueue. Then the pointer of sdio\nworkqueue will be set to NULL due to CONFIG_INIT_ON_FREE_DEFAULT_ON.\n\nAfter device release, destroy_workqueue() will use NULL pointer then the\nkernel panic happen.\n\nCall trace:\nath10k_sdio_remove\n  -\u003eath10k_core_unregister\n    ……\n    -\u003eath10k_core_stop\n      -\u003eath10k_hif_stop\n        -\u003eath10k_sdio_irq_disable\n    -\u003eath10k_hif_power_down\n      -\u003edel_timer_sync(&ar_sdio-\u003esleep_timer)\n  -\u003eath10k_core_destroy\n    -\u003eath10k_mac_destroy\n      -\u003eieee80211_free_hw\n        -\u003ewiphy_free\n    ……\n          -\u003ewiphy_dev_release\n  -\u003edestroy_workqueue\n\nNeed to call destroy_workqueue() before ath10k_core_destroy(), free\nthe work queue buffer first and then free pointer of work queue by\nath10k_core_destroy(). This order matches the error path order in\nath10k_sdio_probe().\n\nNo work will be queued on sdio workqueue between it is destroyed and\nath10k_core_destroy() is called. Based on the call_stack above, the\nreason is:\nOnly ath10k_sdio_sleep_timer_handler(), ath10k_sdio_hif_tx_sg() and\nath10k_sdio_irq_disable() will queue work on sdio workqueue.\nSleep timer will be deleted before ath10k_core_destroy() in\nath10k_hif_power_down().\nath10k_sdio_irq_disable() only be called in ath10k_hif_stop().\nath10k_core_unregister() will call ath10k_hif_power_down() to stop hif\nbus, so ath10k_sdio_hif_tx_sg() won't be called anymore.\n\nTested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00189","modified":"2026-04-02T12:24:54.581413Z","published":"2024-12-27T14:51:05.866Z","related":["SUSE-SU-2025:0117-1","SUSE-SU-2025:0153-1","SUSE-SU-2025:0154-1","SUSE-SU-2025:0236-1","SUSE-SU-2025:0289-1","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7379-2","USN-7380-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56599.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/27d5d217ae7ffb99dd623375a17a7d3418d9c755"},{"type":"WEB","url":"https://git.kernel.org/stable/c/27fda36eedad9e4ec795dc481f307901d1885112"},{"type":"WEB","url":"https://git.kernel.org/stable/c/543c0924d446b21f35701ca084d7feca09511220"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e5dbd1c04abf2c19b2282915e6fa48b6ccc6921"},{"type":"WEB","url":"https://git.kernel.org/stable/c/95c38953cb1ecf40399a676a1f85dfe2b5780a9a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b35de9e01fc79c7baac666fb2dcb4ba7698a1d97"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56599.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56599"},{"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":"5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5"},{"fixed":"27d5d217ae7ffb99dd623375a17a7d3418d9c755"},{"fixed":"27fda36eedad9e4ec795dc481f307901d1885112"},{"fixed":"6e5dbd1c04abf2c19b2282915e6fa48b6ccc6921"},{"fixed":"b35de9e01fc79c7baac666fb2dcb4ba7698a1d97"},{"fixed":"543c0924d446b21f35701ca084d7feca09511220"},{"fixed":"95c38953cb1ecf40399a676a1f85dfe2b5780a9a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56599.json"}}],"schema_version":"1.7.5"}