CVE-2025-21979— wifi: cfg80211: cancel wiphy_work before freeing wiphy
Affected Version Matrix 13
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | ddb1bfbf4ab5c753954d0cd728253b642934a9f2< 8930a3e1568cf534f86c8ed2def817c6d0528fc1 | affected |
3fcc6d7d5f40dad56dee7bde787b7e23edd4b93c< 0272d4af7f92997541d8bbf4c51918b93ded6ee2 | affected | ||
a3ee4dc84c4e9d14cb34dad095fd678127aca5b6< 75d262ad3c36d52852d764588fcd887f0fcd9138 | affected | ||
a3ee4dc84c4e9d14cb34dad095fd678127aca5b6< a5158d67bff06cb6fea31be39aeb319fd908ed8e | affected | ||
a3ee4dc84c4e9d14cb34dad095fd678127aca5b6< dea22de162058216a90f2706f0d0b36f0ff309fd | affected | ||
a3ee4dc84c4e9d14cb34dad095fd678127aca5b6< 72d520476a2fab6f3489e8388ab524985d6c4b90 | affected | ||
6.5 | affected | ||
< 6.5 | unaffected | ||
| … +5 more rows | |||
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I. Basic Information for CVE-2025-21979
Vulnerability Information
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Vulnerability Title
wifi: cfg80211: cancel wiphy_work before freeing wiphy
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel wiphy_work before freeing wiphy A wiphy_work can be queued from the moment the wiphy is allocated and initialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the rdev::wiphy_work is getting queued. If wiphy_free is called before the rdev::wiphy_work had a chance to run, the wiphy memory will be freed, and then when it eventally gets to run it'll use invalid memory. Fix this by canceling the work before freeing the wiphy.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于wifi cfg80211模块在释放wiphy前未取消工作队列。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-21979
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-04-01 · 93 CVEs total
| CVE-2025-21947 | 8.1 HIGH | ksmbd: fix type confusion via race condition when using ipc_msg_send_request |
| CVE-2025-21925 | llc: do not use skb_get() before dev_queue_xmit() | |
| CVE-2025-21931 | hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio | |
| CVE-2025-21934 | rapidio: fix an API misues when rio_add_net() fails | |
| CVE-2025-21935 | rapidio: add check for rio_add_net() in rio_scan_alloc_net() | |
| CVE-2025-21937 | Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() | |
| CVE-2025-21936 | Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected() | |
| CVE-2025-21939 | drm/xe/hmm: Don't dereference struct page pointers without notifier lock | |
| CVE-2025-21933 | arm: pgtable: fix NULL pointer dereference issue | |
| CVE-2025-21927 | nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() | |
| CVE-2025-21926 | net: gso: fix ownership in __udp_gso_segment | |
| CVE-2025-21928 | HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() | |
| CVE-2025-21924 | net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an e | |
| CVE-2025-21922 | ppp: Fix KMSAN uninit-value warning with bpf | |
| CVE-2025-21923 | HID: hid-steam: Fix use-after-free when detaching device | |
| CVE-2025-21920 | vlan: enforce underlying device type | |
| CVE-2025-21921 | net: ethtool: netlink: Allow NULL nlattrs when getting a phy_device | |
| CVE-2025-21919 | sched/fair: Fix potential memory corruption in child_cfs_rq_on_list | |
| CVE-2025-21918 | usb: typec: ucsi: Fix NULL pointer access | |
| CVE-2025-21917 | usb: renesas_usbhs: Flush the notify_hotplug_work |
Showing top 20 of 93 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
Same vendor: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
V. Comments for CVE-2025-21979
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