{"cve":"CVE-2024-56609","nvd":{"published":"2024-12-27T15:15:20.387","modified":"2026-06-17T08:12:32.420","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb\n\nWhen removing kernel modules by:\n   rmmod rtw88_8723cs rtw88_8703b rtw88_8723x rtw88_sdio rtw88_core\n\nDriver uses skb_queue_purge() to purge TX skb, but not report tx status\ncausing \"Have pending ack frames!\" warning. Use ieee80211_purge_tx_queue()\nto correct this.\n\nSince ieee80211_purge_tx_queue() doesn't take locks, to prevent racing\nbetween TX work and purge TX queue, flush and destroy TX work in advance.\n\n   wlan0: deauthenticating from aa:f5:fd:60:4c:a8 by local\n     choice (Reason: 3=DEAUTH_LEAVING)\n   ------------[ cut here ]------------\n   Have pending ack frames!\n   WARNING: CPU: 3 PID: 9232 at net/mac80211/main.c:1691\n       ieee80211_free_ack_frame+0x5c/0x90 [mac80211]\n   CPU: 3 PID: 9232 Comm: rmmod Tainted: G         C\n       6.10.1-200.fc40.aarch64 #1\n   Hardware name: pine64 Pine64 PinePhone Braveheart\n      (1.1)/Pine64 PinePhone Braveheart (1.1), BIOS 2024.01 01/01/2024\n   pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n   pc : ieee80211_free_ack_frame+0x5c/0x90 [mac80211]\n   lr : ieee80211_free_ack_frame+0x5c/0x90 [mac80211]\n   sp : ffff80008c1b37b0\n   x29: ffff80008c1b37b0 x28: ffff000003be8000 x27: 0000000000000000\n   x26: 0000000000000000 x25: ffff000003dc14b8 x24: ffff80008c1b37d0\n   x23: ffff000000ff9f80 x22: 0000000000000000 x21: 000000007fffffff\n   x20: ffff80007c7e93d8 x19: ffff00006e66f400 x18: 0000000000000000\n   x17: ffff7ffffd2b3000 x16: ffff800083fc0000 x15: 0000000000000000\n   x14: 0000000000000000 x13: 2173656d61726620 x12: 6b636120676e6964\n   x11: 0000000000000000 x10: 000000000000005d x9 : ffff8000802af2b0\n   x8 : ffff80008c1b3430 x7 : 0000000000000001 x6 : 0000000000000001\n   x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n   x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000003be8000\n   Call trace:\n    ieee80211_free_ack_frame+0x5c/0x90 [mac80211]\n    idr_for_each+0x74/0x110\n    ieee80211_free_hw+0x44/0xe8 [mac80211]\n    rtw_sdio_remove+0x9c/0xc0 [rtw88_sdio]\n    sdio_bus_remove+0x44/0x180\n    device_remove+0x54/0x90\n    device_release_driver_internal+0x1d4/0x238\n    driver_detach+0x54/0xc0\n    bus_remove_driver+0x78/0x108\n    driver_unregister+0x38/0x78\n    sdio_unregister_driver+0x2c/0x40\n    rtw_8723cs_driver_exit+0x18/0x1000 [rtw88_8723cs]\n    __do_sys_delete_module.isra.0+0x190/0x338\n    __arm64_sys_delete_module+0x1c/0x30\n    invoke_syscall+0x74/0x100\n    el0_svc_common.constprop.0+0x48/0xf0\n    do_el0_svc+0x24/0x38\n    el0_svc+0x3c/0x158\n    el0t_64_sync_handler+0x120/0x138\n    el0t_64_sync+0x194/0x198\n   ---[ end trace 0000000000000000 ]---","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/3d94c4b21966b49c3e26ceeefacaa11ff7ee6d68","https://git.kernel.org/stable/c/3e5e4a801aaf4283390cc34959c6c48f910ca5ea","https://git.kernel.org/stable/c/4e8ce3978d704cb28678355d294e10a008b6230a","https://git.kernel.org/stable/c/9bca6528f20325d30c22236b23116f161d418f6d","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:56.913276502+00:00"},"epss":{"cve":"CVE-2024-56609","score":0.00227,"percentile":0.13443,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}