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Response snapshot Nov 5, 2026, 23:11 UTC

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VulnerabilityCVE-2024-56609

Linux kernel: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb When removing kernel modules by: rmmod rtw88_8723cs rtw88_8703b rtw88_8723x rtw88_sdio rtw88_core Driver uses skb_queue_purge() to purge TX skb, but not report tx status causing "Have pending ack frames!"

At a glance

Exploited
Not known
Severity
7.8 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2024-56609 (opens a new tab)

What happened

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb

When removing kernel modules by: rmmod rtw88_8723cs rtw88_8703b rtw88_8723x rtw88_sdio rtw88_core

Driver uses skb_queue_purge() to purge TX skb, but not report tx status causing "Have pending ack frames!" warning. Use ieee80211_purge_tx_queue() to correct this.

Continue reading

Since ieee80211_purge_tx_queue() doesn't take locks, to prevent racing between TX work and purge TX queue, flush and destroy TX work in advance.

wlan0: deauthenticating from aa:f5:fd:60:4c:a8 by local choice (Reason: 3=DEAUTH_LEAVING) ------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 3 PID: 9232 at net/mac80211/main.c:1691 ieee80211_free_ack_frame+0x5c/0x90 [mac80211] CPU: 3 PID: 9232 Comm: rmmod Tainted: G C 6.10.1-200.fc40.aarch64 #1 Hardware name: pine64 Pine64 PinePhone Braveheart (1.1)/Pine64 PinePhone Braveheart (1.

1), BIOS 2024.

01 01/01/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ieee80211_free_ack_frame+0x5c/0x90 [mac80211] lr : ieee80211_free_ack_frame+0x5c/0x90 [mac80211] sp : ffff80008c1b37b0 x29: ffff80008c1b37b0 x28: ffff000003be8000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff000003dc14b8 x24: ffff80008c1b37d0 x23: ffff000000ff9f80 x22: 0000000000000000 x21: 000000007fffffff x20: ffff80007c7e93d8 x19: ffff00006e66f400 x18: 0000000000000000 x17: ffff7ffffd2b3000 x16: ffff800083fc0000 x15: 0000000000000000 x14: 0000000000000000 x13: 2173656d61726620 x12: 6b636120676e6964 x11: 0000000000000000 x10: 000000000000005d x9 : ffff8000802af2b0 x8 : ffff80008c1b3430 x7 : 0000000000000001 x6 : 0000000000000001 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000003be8000 Call trace: ieee80211_free_ack_frame+0x5c/0x90 [mac80211] idr_for_each+0x74/0x110 ieee80211_free_hw+0x44/0xe8 [mac80211] rtw_sdio_remove+0x9c/0xc0 [rtw88_sdio] sdio_bus_remove+0x44/0x180 device_remove+0x54/0x90 device_release_driver_internal+0x1d4/0x238 driver_detach+0x54/0xc0 bus_remove_driver+0x78/0x108 driver_unregister+0x38/0x78 sdio_unregister_driver+0x2c/0x40 rtw_8723cs_driver_exit+0x18/0x1000 [rtw88_8723cs] __do_sys_delete_module.

isra.0+0x190/0x338 __arm64_sys_delete_module+0x1c/0x30 invoke_syscall+0x74/0x100 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x3c/0x158 el0t_64_sync_handler+0x120/0x138 el0t_64_sync+0x194/0x198 ---[ end trace 0000000000000000 ]---

Scores and how they were measured

CVSS base severity

7.8

Version 3.1As of

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    NVD CVE-2024-56609 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 5). Linux kernel: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb (CVE-2024-56609). https://kevwire.com/record/CVE-2024-56609

MLA

"Linux kernel: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb (CVE-2024-56609)." KEVWire, 5 Nov. 2026, kevwire.com/record/CVE-2024-56609.

Chicago

KEVWire. "Linux kernel: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb (CVE-2024-56609)." Last modified November 5, 2026. https://kevwire.com/record/CVE-2024-56609.

Evidence summary (plain text)

Linux kernel: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb (Dec 27, 2024).
In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb

When removing kernel modules by:
   rmmod rtw88_8723cs rtw88_8703b rtw88_8723x rtw88_sdio rtw88_core

Driver uses skb_queue_purge() to purge TX skb, but not report tx status
causing "Have pending ack frames!" warning. Use ieee80211_purge_tx_queue()
to correct this.

Since ieee80211_purge_tx_queue() doesn't take locks, to prevent racing
between TX work and purge TX queue, flush and destroy TX work in advance.
CVSS 7.8 (version 3.1; evidence as of Nov 5, 2026; https://nvd.nist.gov/vuln/detail/CVE-2024-56609).
Sources:
NVD CVE-2024-56609: https://nvd.nist.gov/vuln/detail/CVE-2024-56609
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-05T20:51:23.450Z&lastModEndDate=2026-11-05T22:25:57.582Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-05T20:16:05.862Z&lastModEndDate=2026-11-05T21:50:58.884Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2024-56609.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 5, 2026, 22:25 UTC. Ingestion is not an independent editorial investigation.

NVD status: Modified. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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