{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-56609",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-56609"
  ],
  "published": "2024-12-27T14:59:59Z",
  "summary": "wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb",
  "details": "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 ]---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
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        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1",
        "1:6.6.31-1+rpt1",
        "1:6.6.47-1+rpt1",
        "1:6.6.51-1+rpt1",
        "1:6.6.51-1+rpt2",
        "1:6.6.51-1+rpt3",
        "1:6.6.62-1+rpt1"
      ],
      "ecosystem_specific": {
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      "database_specific": {
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            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.136",
            "compiled_filter": false
          },
          "1:6.6.20-1+rpt1": {
            "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668",
            "upstream_version": "6.6.20",
            "assessment": "commit ancestry (strak rule)",
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          "1:6.6.51-1+rpt2": {
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            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.70"
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            "assessment": "commit ancestry (strak rule)",
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    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-56609"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4e8ce3978d704cb28678355d294e10a008b6230a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3d94c4b21966b49c3e26ceeefacaa11ff7ee6d68"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9bca6528f20325d30c22236b23116f161d418f6d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e5e4a801aaf4283390cc34959c6c48f910ca5ea"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}