{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40000", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.151Z", "datePublished": "2025-10-15T07:59:14.606Z", "dateUpdated": "2025-12-01T06:16:12.423Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-01T06:16:12.423Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()\n\nThere is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to\naccess already freed skb_data:\n\n BUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\n\n CPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025\n Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]\n\n Use-after-free write at 0x0000000020309d9d (in kfence-#251):\n rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\n rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\n rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\n rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\n rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141\n rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\n rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\n rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\n process_one_work kernel/workqueue.c:3241\n worker_thread kernel/workqueue.c:3400\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\n kfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache\n\n allocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago):\n __alloc_skb net/core/skbuff.c:659\n __netdev_alloc_skb net/core/skbuff.c:734\n ieee80211_nullfunc_get net/mac80211/tx.c:5844\n rtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431\n rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\n rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\n rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\n rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194\n rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\n rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\n rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\n process_one_work kernel/workqueue.c:3241\n worker_thread kernel/workqueue.c:3400\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\n freed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago):\n ieee80211_tx_status_skb net/mac80211/status.c:1117\n rtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564\n rtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651\n rtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676\n rtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238\n __napi_poll net/core/dev.c:7495\n net_rx_action net/core/dev.c:7557 net/core/dev.c:7684\n handle_softirqs kernel/softirq.c:580\n do_softirq.part.0 kernel/softirq.c:480\n __local_bh_enable_ip kernel/softirq.c:407\n rtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927\n irq_thread_fn kernel/irq/manage.c:1133\n irq_thread kernel/irq/manage.c:1257\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\nIt is a consequence of a race between the waiting and the signaling side\nof the completion:\n\n Waiting thread Completing thread\n\nrtw89_core_tx_kick_off_and_wait()\n rcu_assign_pointer(skb_data->wait, wait)\n /* start waiting */\n wait_for_completion_timeout()\n rtw89_pci_tx_status()\n rtw89_core_tx_wait_complete()\n rcu_read_lock()\n /* signals completion and\n \n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/realtek/rtw89/core.c", "drivers/net/wireless/realtek/rtw89/core.h", "drivers/net/wireless/realtek/rtw89/pci.c", "drivers/net/wireless/realtek/rtw89/ser.c"], "versions": [{"version": "1ae5ca615285d5d4f72d1de464716d85dffef19f", "lessThan": "895cccf639ac015f3d5f993218cf098db82ac145", "status": "affected", "versionType": "git"}, {"version": "1ae5ca615285d5d4f72d1de464716d85dffef19f", "lessThan": "f21f530b03b4b23448edb531a0cfea434cb76bb4", "status": "affected", "versionType": "git"}, {"version": "1ae5ca615285d5d4f72d1de464716d85dffef19f", "lessThan": "bdb3c41b358cf87d99e39d393e164f9e4a6088e6", "status": "affected", "versionType": "git"}, {"version": "1ae5ca615285d5d4f72d1de464716d85dffef19f", "lessThan": "3e31a6bc07312b448fad3b45de578471f86f0e77", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/realtek/rtw89/core.c", "drivers/net/wireless/realtek/rtw89/core.h", "drivers/net/wireless/realtek/rtw89/pci.c", "drivers/net/wireless/realtek/rtw89/ser.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.52", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.12", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.1", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.16.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.17.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/895cccf639ac015f3d5f993218cf098db82ac145"}, {"url": "https://git.kernel.org/stable/c/f21f530b03b4b23448edb531a0cfea434cb76bb4"}, {"url": "https://git.kernel.org/stable/c/bdb3c41b358cf87d99e39d393e164f9e4a6088e6"}, {"url": "https://git.kernel.org/stable/c/3e31a6bc07312b448fad3b45de578471f86f0e77"}], "title": "wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()\n\nThere is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to\naccess already freed skb_data:\n\n BUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\n\n CPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025\n Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]\n\n Use-after-free write at 0x0000000020309d9d (in kfence-#251):\n rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\n rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\n rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\n rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\n rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141\n rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\n rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\n rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\n process_one_work kernel/workqueue.c:3241\n worker_thread kernel/workqueue.c:3400\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\n kfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache\n\n allocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago):\n __alloc_skb net/core/skbuff.c:659\n __netdev_alloc_skb net/core/skbuff.c:734\n ieee80211_nullfunc_get net/mac80211/tx.c:5844\n rtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431\n rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\n rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\n rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\n rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194\n rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\n rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\n rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\n process_one_work kernel/workqueue.c:3241\n worker_thread kernel/workqueue.c:3400\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\n freed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago):\n ieee80211_tx_status_skb net/mac80211/status.c:1117\n rtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564\n rtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651\n rtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676\n rtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238\n __napi_poll net/core/dev.c:7495\n net_rx_action net/core/dev.c:7557 net/core/dev.c:7684\n handle_softirqs kernel/softirq.c:580\n do_softirq.part.0 kernel/softirq.c:480\n __local_bh_enable_ip kernel/softirq.c:407\n rtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927\n irq_thread_fn kernel/irq/manage.c:1133\n irq_thread kernel/irq/manage.c:1257\n kthread kernel/kthread.c:463\n ret_from_fork arch/x86/kernel/process.c:154\n ret_from_fork_asm arch/x86/entry/entry_64.S:258\n\nIt is a consequence of a race between the waiting and the signaling side\nof the completion:\n\n Waiting thread Completing thread\n\nrtw89_core_tx_kick_off_and_wait()\n rcu_assign_pointer(skb_data->wait, wait)\n /* start waiting */\n wait_for_completion_timeout()\n rtw89_pci_tx_status()\n rtw89_core_tx_wait_complete()\n rcu_read_lock()\n /* signals completion and\n \n---truncated---"}], "id": "CVE-2025-40000", "lastModified": "2025-10-16T15:28:59.610", "metrics": {}, "published": "2025-10-15T08:15:38.330", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e31a6bc07312b448fad3b45de578471f86f0e77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/895cccf639ac015f3d5f993218cf098db82ac145"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bdb3c41b358cf87d99e39d393e164f9e4a6088e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f21f530b03b4b23448edb531a0cfea434cb76bb4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()", "id": "2404120", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404120"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()\nThere is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to\naccess already freed skb_data:\nBUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\nCPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025\nWorkqueue: events_unbound cfg80211_wiphy_work [cfg80211]\nUse-after-free write at 0x0000000020309d9d (in kfence-#251):\nrtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110\nrtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\nrtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\nrtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\nrtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141\nrtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\nrtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\nrtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\nprocess_one_work kernel/workqueue.c:3241\nworker_thread kernel/workqueue.c:3400\nkthread kernel/kthread.c:463\nret_from_fork arch/x86/kernel/process.c:154\nret_from_fork_asm arch/x86/entry/entry_64.S:258\nkfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache\nallocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago):\n__alloc_skb net/core/skbuff.c:659\n__netdev_alloc_skb net/core/skbuff.c:734\nieee80211_nullfunc_get net/mac80211/tx.c:5844\nrtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431\nrtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338\nrtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979\nrtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165\nrtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194\nrtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012\nrtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059\nrtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758\nprocess_one_work kernel/workqueue.c:3241\nworker_thread kernel/workqueue.c:3400\nkthread kernel/kthread.c:463\nret_from_fork arch/x86/kernel/process.c:154\nret_from_fork_asm arch/x86/entry/entry_64.S:258\nfreed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago):\nieee80211_tx_status_skb net/mac80211/status.c:1117\nrtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564\nrtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651\nrtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676\nrtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238\n__napi_poll net/core/dev.c:7495\nnet_rx_action net/core/dev.c:7557 net/core/dev.c:7684\nhandle_softirqs kernel/softirq.c:580\ndo_softirq.part.0 kernel/softirq.c:480\n__local_bh_enable_ip kernel/softirq.c:407\nrtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927\nirq_thread_fn kernel/irq/manage.c:1133\nirq_thread kernel/irq/manage.c:1257\nkthread kernel/kthread.c:463\nret_from_fork arch/x86/kernel/process.c:154\nret_from_fork_asm arch/x86/entry/entry_64.S:258\nIt is a consequence of a race between the waiting and the signaling side\nof the completion:\nWaiting thread Completing thread\nrtw89_core_tx_kick_off_and_wait()\nrcu_assign_pointer(skb_data->wait, wait)\n/* start waiting */\nwait_for_completion_timeout()\nrtw89_pci_tx_status()\nrtw89_core_tx_wait_complete()\nrcu_read_lock()\n/* signals completion and\n---truncated---"], "name": "CVE-2025-40000", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40000\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40000\nhttps://lore.kernel.org/linux-cve-announce/2025101518-CVE-2025-40000-8817@gregkh/T"], "threat_severity": "Important"}