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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix race between cancel_hw_scan and hw_scan completion\n\nThe rtwdev-\u003escanning flag isn\u0027t protected by mutex originally, so\ncancel_hw_scan can pass the condition, but suddenly hw_scan completion\nunset the flag and calls ieee80211_scan_completed() that will free\nlocal-\u003ehw_scan_req. Then, cancel_hw_scan raises null-ptr-deref and\nuse-after-free. Fix it by moving the check condition to where\nprotected by mutex.\n\n KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]\n CPU: 2 PID: 6922 Comm: kworker/2:2 Tainted: G           OE\n Hardware name: LENOVO 2356AD1/2356AD1, BIOS G7ETB6WW (2.76 ) 09/10/2019\n Workqueue: events cfg80211_conn_work [cfg80211]\n RIP: 0010:rtw89_fw_h2c_scan_offload_be+0xc33/0x13c3 [rtw89_core]\n Code: 00 45 89 6c 24 1c 0f 85 23 01 00 00 48 8b 85 20 ff ff ff 48 8d\n RSP: 0018:ffff88811fd9f068 EFLAGS: 00010206\n RAX: dffffc0000000000 RBX: ffff88811fd9f258 RCX: 0000000000000001\n RDX: 0000000000000011 RSI: 0000000000000001 RDI: 0000000000000089\n RBP: ffff88811fd9f170 R08: 0000000000000000 R09: 0000000000000000\n R10: ffff88811fd9f108 R11: 0000000000000000 R12: ffff88810e47f960\n R13: 0000000000000000 R14: 000000000000ffff R15: 0000000000000000\n FS:  0000000000000000(0000) GS:ffff8881d6f00000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007531dfca55b0 CR3: 00000001be296004 CR4: 00000000001706e0\n Call Trace:\n  \u003cTASK\u003e\n  ? show_regs+0x61/0x73\n  ? __die_body+0x20/0x73\n  ? die_addr+0x4f/0x7b\n  ? exc_general_protection+0x191/0x1db\n  ? asm_exc_general_protection+0x27/0x30\n  ? rtw89_fw_h2c_scan_offload_be+0xc33/0x13c3 [rtw89_core]\n  ? rtw89_fw_h2c_scan_offload_be+0x458/0x13c3 [rtw89_core]\n  ? __pfx_rtw89_fw_h2c_scan_offload_be+0x10/0x10 [rtw89_core]\n  ? do_raw_spin_lock+0x75/0xdb\n  ? __pfx_do_raw_spin_lock+0x10/0x10\n  rtw89_hw_scan_offload+0xb5e/0xbf7 [rtw89_core]\n  ? _raw_spin_unlock+0xe/0x24\n  ? __mutex_lock.constprop.0+0x40c/0x471\n  ? __pfx_rtw89_hw_scan_offload+0x10/0x10 [rtw89_core]\n  ? __mutex_lock_slowpath+0x13/0x1f\n  ? mutex_lock+0xa2/0xdc\n  ? __pfx_mutex_lock+0x10/0x10\n  rtw89_hw_scan_abort+0x58/0xb7 [rtw89_core]\n  rtw89_ops_cancel_hw_scan+0x120/0x13b [rtw89_core]\n  ieee80211_scan_cancel+0x468/0x4d0 [mac80211]\n  ieee80211_prep_connection+0x858/0x899 [mac80211]\n  ieee80211_mgd_auth+0xbea/0xdde [mac80211]\n  ? __pfx_ieee80211_mgd_auth+0x10/0x10 [mac80211]\n  ? cfg80211_find_elem+0x15/0x29 [cfg80211]\n  ? is_bss+0x1b7/0x1d7 [cfg80211]\n  ieee80211_auth+0x18/0x27 [mac80211]\n  cfg80211_mlme_auth+0x3bb/0x3e7 [cfg80211]\n  cfg80211_conn_do_work+0x410/0xb81 [cfg80211]\n  ? __pfx_cfg80211_conn_do_work+0x10/0x10 [cfg80211]\n  ? __kasan_check_read+0x11/0x1f\n  ? psi_group_change+0x8bc/0x944\n  ? __kasan_check_write+0x14/0x22\n  ? mutex_lock+0x8e/0xdc\n  ? __pfx_mutex_lock+0x10/0x10\n  ? __pfx___radix_tree_lookup+0x10/0x10\n  cfg80211_conn_work+0x245/0x34d [cfg80211]\n  ? __pfx_cfg80211_conn_work+0x10/0x10 [cfg80211]\n  ? update_cfs_rq_load_avg+0x3bc/0x3d7\n  ? sched_clock_noinstr+0x9/0x1a\n  ? sched_clock+0x10/0x24\n  ? sched_clock_cpu+0x7e/0x42e\n  ? newidle_balance+0x796/0x937\n  ? __pfx_sched_clock_cpu+0x10/0x10\n  ? __pfx_newidle_balance+0x10/0x10\n  ? __kasan_check_read+0x11/0x1f\n  ? psi_group_change+0x8bc/0x944\n  ? _raw_spin_unlock+0xe/0x24\n  ? raw_spin_rq_unlock+0x47/0x54\n  ? raw_spin_rq_unlock_irq+0x9/0x1f\n  ? finish_task_switch.isra.0+0x347/0x586\n  ? __schedule+0x27bf/0x2892\n  ? mutex_unlock+0x80/0xd0\n  ? do_raw_spin_lock+0x75/0xdb\n  ? __pfx___schedule+0x10/0x10\n  process_scheduled_works+0x58c/0x821\n  worker_thread+0x4c7/0x586\n  ? __kasan_check_read+0x11/0x1f\n  kthread+0x285/0x294\n  ? __pfx_worker_thread+0x10/0x10\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork+0x29/0x6f\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork_asm+0x1b/0x30\n  \u003c/TASK\u003e"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is `ieee80211_ops::cancel_hw_scan`, reached only through local wireless-stack operations (nl80211 TRIGGER_SCAN plus a connect/auth that triggers `ieee80211_scan_cancel`); no attacker-supplied frame is parsed on this path. An adjacent attacker can only indirectly nudge the local supplicant into scan/reconnect cycles, so delivery is local.\nAC:L - The attacker drives both sides of the race \u2014 it starts the hardware scan and issues the connect that invokes cancel_hw_scan \u2014 and the window is wide because the cancel thread blocks on `rtwdev-\u003emutex` for the entire duration of the firmware-driven completion work. The sequence can be repeated indefinitely until the race is won.\nPR:L - Only the ability to request scans and connections is needed; on typical desktop and mobile deployments an ordinary logged-in user can drive both through NetworkManager/wpa_supplicant (polkit/Settings), and the underlying nl80211 gate is the namespaced `GENL_UNS_ADMIN_PERM` capability rather than real root.\nUI:N - No victim action is needed \u2014 the attacker issues the scan and connect requests itself, and the crash trace shows the trigger arriving from the automatic `cfg80211_conn_work` SME reconnect path.\nS:U - The corruption and the crash are confined to the kernel\u0027s own memory and the rtw89 driver state; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `rtwvif-\u003escan_req`/`scan_ies` dangle into the kfree\u0027d, heap-sprayable `local-\u003ehw_scan_req`, and the driver dereferences pointers read out of it (`req-\u003echannels[idx]`, `req-\u003eies`), giving an attacker-groomable read primitive that can disclose kernel memory.\nI:H - The use-after-free on `local-\u003ehw_scan_req` lets an attacker reclaim the freed allocation and control the fields the driver uses to build firmware H2C commands and channel lists, which is exploitable for memory corruption and control-flow influence.\nA:H - The documented outcome is a kernel oops (`null-ptr-deref` on `req-\u003eno_cck`) inside a workqueue while `rtwdev-\u003emutex` and the wiphy mutex are held, killing the worker with locks held and leaving the wireless device \u2014 and potentially the system \u2014 hung."
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      "title": "wifi: rtw89: fix race between cancel_hw_scan and hw_scan completion",
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    "dateUpdated": "2026-10-21T12:35:58.252Z",
    "state": "PUBLISHED"
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                  "vulnerable": true
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                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\natm: Fix NULL pointer dereference\n\nWhen MPOA_cache_impos_rcvd() receives the msg, it can trigger\nNull Pointer Dereference Vulnerability if both entry and\nholding_time are NULL. Because there is only for the situation\nwhere entry is NULL and holding_time exists, it can be passed\nwhen both entry and holding_time are NULL. If these are NULL,\nthe entry will be passd to eg_cache_put() as parameter and\nit is referenced by entry-\u003euse code in it.\n\nkasan log:\n\n[    3.316691] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006:I\n[    3.317568] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\n[    3.318188] CPU: 3 UID: 0 PID: 79 Comm: ex Not tainted 6.14.0-rc2 #102\n[    3.318601] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n[    3.319298] RIP: 0010:eg_cache_remove_entry+0xa5/0x470\n[    3.319677] Code: c1 f7 6e fd 48 c7 c7 00 7e 38 b2 e8 95 64 54 fd 48 c7 c7 40 7e 38 b2 48 89 ee e80\n[    3.321220] RSP: 0018:ffff88800583f8a8 EFLAGS: 00010006\n[    3.321596] RAX: 0000000000000006 RBX: ffff888005989000 RCX: ffffffffaecc2d8e\n[    3.322112] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000030\n[    3.322643] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff6558b88\n[    3.323181] R10: 0000000000000003 R11: 203a207972746e65 R12: 1ffff11000b07f15\n[    3.323707] R13: dffffc0000000000 R14: ffff888005989000 R15: ffff888005989068\n[    3.324185] FS:  000000001b6313c0(0000) GS:ffff88806d380000(0000) knlGS:0000000000000000\n[    3.325042] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    3.325545] CR2: 00000000004b4b40 CR3: 000000000248e000 CR4: 00000000000006f0\n[    3.326430] Call Trace:\n[    3.326725]  \u003cTASK\u003e\n[    3.326927]  ? die_addr+0x3c/0xa0\n[    3.327330]  ? exc_general_protection+0x161/0x2a0\n[    3.327662]  ? asm_exc_general_protection+0x26/0x30\n[    3.328214]  ? vprintk_emit+0x15e/0x420\n[    3.328543]  ? eg_cache_remove_entry+0xa5/0x470\n[    3.328910]  ? eg_cache_remove_entry+0x9a/0x470\n[    3.329294]  ? __pfx_eg_cache_remove_entry+0x10/0x10\n[    3.329664]  ? console_unlock+0x107/0x1d0\n[    3.329946]  ? __pfx_console_unlock+0x10/0x10\n[    3.330283]  ? do_syscall_64+0xa6/0x1a0\n[    3.330584]  ? entry_SYSCALL_64_after_hwframe+0x47/0x7f\n[    3.331090]  ? __pfx_prb_read_valid+0x10/0x10\n[    3.331395]  ? down_trylock+0x52/0x80\n[    3.331703]  ? vprintk_emit+0x15e/0x420\n[    3.331986]  ? __pfx_vprintk_emit+0x10/0x10\n[    3.332279]  ? down_trylock+0x52/0x80\n[    3.332527]  ? _printk+0xbf/0x100\n[    3.332762]  ? __pfx__printk+0x10/0x10\n[    3.333007]  ? _raw_write_lock_irq+0x81/0xe0\n[    3.333284]  ? __pfx__raw_write_lock_irq+0x10/0x10\n[    3.333614]  msg_from_mpoad+0x1185/0x2750\n[    3.333893]  ? __build_skb_around+0x27b/0x3a0\n[    3.334183]  ? __pfx_msg_from_mpoad+0x10/0x10\n[    3.334501]  ? __alloc_skb+0x1c0/0x310\n[    3.334809]  ? __pfx___alloc_skb+0x10/0x10\n[    3.335283]  ? _raw_spin_lock+0xe0/0xe0\n[    3.335632]  ? finish_wait+0x8d/0x1e0\n[    3.335975]  vcc_sendmsg+0x684/0xba0\n[    3.336250]  ? __pfx_vcc_sendmsg+0x10/0x10\n[    3.336587]  ? __pfx_autoremove_wake_function+0x10/0x10\n[    3.337056]  ? fdget+0x176/0x3e0\n[    3.337348]  __sys_sendto+0x4a2/0x510\n[    3.337663]  ? __pfx___sys_sendto+0x10/0x10\n[    3.337969]  ? ioctl_has_perm.constprop.0.isra.0+0x284/0x400\n[    3.338364]  ? sock_ioctl+0x1bb/0x5a0\n[    3.338653]  ? __rseq_handle_notify_resume+0x825/0xd20\n[    3.339017]  ? __pfx_sock_ioctl+0x10/0x10\n[    3.339316]  ? __pfx___rseq_handle_notify_resume+0x10/0x10\n[    3.339727]  ? selinux_file_ioctl+0xa4/0x260\n[    3.340166]  __x64_sys_sendto+0xe0/0x1c0\n[    3.340526]  ? syscall_exit_to_user_mode+0x123/0x140\n[    3.340898]  do_syscall_64+0xa6/0x1a0\n[    3.341170]  entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[    3.341533] RIP: 0033:0x44a380\n[    3.341757] Code: 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c00\n[    \n---truncated---"
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          "url": "https://git.kernel.org/stable/c/ab92f51c7f53a08f1a686bfb80690ebb3672357d"
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          "url": "https://git.kernel.org/stable/c/1505f9b720656b17865e4166ab002960162bf679"
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          "url": "https://git.kernel.org/stable/c/bf2986fcf82a449441f9ee4335df19be19e83970"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcachefs: bch2_ioctl_subvolume_destroy() fixes\n\nbch2_evict_subvolume_inodes() was getting stuck - due to incorrectly\npruning the dcache.\n\nAlso, fix missing permissions checks."
        }
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              "value": "AV:L - The bug is reached through `ioctl(BCH_IOCTL_SUBVOLUME_DESTROY)` on any open file descriptor belonging to a mounted bcachefs filesystem, which requires local access to the system. There is no network-facing path into `bch2_fs_file_ioctl()`.\nAC:L - The attacker deterministically triggers both defects with a single ioctl call \u2014 no race, no memory-layout dependence, no timing window; the dcache state that wedges `bch2_evict_subvolume_inodes()` is created by the attacker simply by walking into the subvolume beforehand. No conditions lie outside the attacker\u0027s control.\nPR:L - `BCH_IOCTL_SUBVOLUME_DESTROY` has no `capable()` check and, before this fix, no `inode_permission()` check, so an ordinary unprivileged local user needs only an fd on the bcachefs mount plus search (`MAY_EXEC`) permission along the path to the victim subvolume. No CAP_SYS_ADMIN, no user-namespace trick, and no ownership of or write access to the target is required.\nUI:N - The attacker issues the ioctl directly with no action by any other user; the mounted bcachefs filesystem is an ambient system configuration, not a victim-performed step at exploit time.\nS:U - The vulnerable code and the impacted resources (kernel filesystem state, on-disk subvolume data) are managed by the same security authority \u2014 the kernel. This is a standard in-kernel DAC-bypass/DoS with no VM, IOMMU, or sandbox boundary crossed.\nC:L - There is no direct arbitrary-read primitive, but the DAC bypass has bounded disclosure consequences: after destroying a root- or other-user-owned subvolume in a directory the attacker can write to, the attacker can recreate the path and have a privileged process deposit sensitive data into attacker-controlled storage, and the non-invalidated dcache subtree leaves stale dentries/inodes referencing a freed subvolume ID that can be reused by another user\u0027s newly created subvolume.\nI:H - An unprivileged user can permanently destroy any subvolume they can merely traverse to \u2014 including root-owned subvolumes and other users\u0027 mode-0700 subvolumes \u2014 bypassing all ownership, write-permission, sticky-bit and non-empty-directory protections, which is unauthorized destruction of arbitrary data on the filesystem. The stale, still-hashed dentry subtree over a deleted subvolume additionally permits writes through inodes whose subvolume ID may be reused.\nA:H - The `d_delete()` bug leaves `bch2_evict_subvolume_inodes()` stuck in `TASK_UNINTERRUPTIBLE`, producing an unkillable D-state kworker that holds `BCH_WRITE_REF_snapshot_delete_pagecache` forever \u2014 unmount and read-only transitions hang, all further subvolume deletions stall, and recovery requires a reboot. Independently, arbitrary destruction of subvolumes (e.g. one holding `/home` or a database) is total loss of the affected data."
            }
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        {
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              "confidentialityImpact": "HIGH",
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "semver"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove\n\nThis fixes the following crash:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\nRead of size 8 at addr ffff888136335380 by task kworker/6:0/140241\n\nCPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G            E      6.14.0-rc6+ #1\nTainted: [E]=UNSIGNED_MODULE\nHardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024\nWorkqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x51/0x70\n print_address_description.constprop.0+0x27/0x320\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n print_report+0x3e/0x70\n kasan_report+0xab/0xe0\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms]\n ? __pfx___schedule+0x10/0x10\n ? kick_pool+0x3b/0x270\n process_one_work+0x357/0x660\n worker_thread+0x390/0x4c0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x190/0x1d0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nAllocated by task 161446:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0x7b/0x90\n __kmalloc_noprof+0x1a7/0x470\n memstick_alloc_host+0x1f/0xe0 [memstick]\n rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms]\n platform_probe+0x60/0xe0\n call_driver_probe+0x35/0x120\n really_probe+0x123/0x410\n __driver_probe_device+0xc7/0x1e0\n driver_probe_device+0x49/0xf0\n __device_attach_driver+0xc6/0x160\n bus_for_each_drv+0xe4/0x160\n __device_attach+0x13a/0x2b0\n bus_probe_device+0xbd/0xd0\n device_add+0x4a5/0x760\n platform_device_add+0x189/0x370\n mfd_add_device+0x587/0x5e0\n mfd_add_devices+0xb1/0x130\n rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb]\n usb_probe_interface+0x15c/0x460\n call_driver_probe+0x35/0x120\n really_probe+0x123/0x410\n __driver_probe_device+0xc7/0x1e0\n driver_probe_device+0x49/0xf0\n __device_attach_driver+0xc6/0x160\n bus_for_each_drv+0xe4/0x160\n __device_attach+0x13a/0x2b0\n rebind_marked_interfaces.isra.0+0xcc/0x110\n usb_reset_device+0x352/0x410\n usbdev_do_ioctl+0xe5c/0x1860\n usbdev_ioctl+0xa/0x20\n __x64_sys_ioctl+0xc5/0xf0\n do_syscall_64+0x59/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFreed by task 161506:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x36/0x60\n __kasan_slab_free+0x34/0x50\n kfree+0x1fd/0x3b0\n device_release+0x56/0xf0\n kobject_cleanup+0x73/0x1c0\n rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms]\n platform_remove+0x2f/0x50\n device_release_driver_internal+0x24b/0x2e0\n bus_remove_device+0x124/0x1d0\n device_del+0x239/0x530\n platform_device_del.part.0+0x19/0xe0\n platform_device_unregister+0x1c/0x40\n mfd_remove_devices_fn+0x167/0x170\n device_for_each_child_reverse+0xc9/0x130\n mfd_remove_devices+0x6e/0xa0\n rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb]\n usb_unbind_interface+0xf3/0x3f0\n device_release_driver_internal+0x24b/0x2e0\n proc_disconnect_claim+0x13d/0x220\n usbdev_do_ioctl+0xb5e/0x1860\n usbdev_ioctl+0xa/0x20\n __x64_sys_ioctl+0xc5/0xf0\n do_syscall_64+0x59/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nLast potentially related work creation:\n kasan_save_stack+0x20/0x40\n kasan_record_aux_stack+0x85/0x90\n insert_work+0x29/0x100\n __queue_work+0x34a/0x540\n call_timer_fn+0x2a/0x160\n expire_timers+0x5f/0x1f0\n __run_timer_base.part.0+0x1b6/0x1e0\n run_timer_softirq+0x8b/0xe0\n handle_softirqs+0xf9/0x360\n __irq_exit_rcu+0x114/0x130\n sysvec_apic_timer_interrupt+0x72/0x90\n asm_sysvec_apic_timer_interrupt+0x16/0x20\n\nSecond to last potentially related work creation:\n kasan_save_stack+0x20/0x40\n kasan_record_aux_stack+0x85/0x90\n insert_work+0x29/0x100\n __queue_work+0x34a/0x540\n call_timer_fn+0x2a/0x160\n expire_timers+0x5f/0x1f0\n __run_timer_base.part.0+0x1b6/0x1e0\n run_timer_softirq+0x8b/0xe0\n handle_softirqs+0xf9/0x\n---truncated---"
        }
      ],
      "metrics": [
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            "baseScore": 7.8,
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "lang": "en",
              "value": "AV:L - The reporter\u0027s own KASAN trace shows the free being driven entirely from userspace via usbfs ioctls (`USBDEVFS_DISCONNECT_CLAIM` and `USBDEVFS_RESET` through `usbdev_do_ioctl`), requiring no physical manipulation of the reader, only local access to `/dev/bus/usb/...`.\nAC:L - The attacker controls both sides: the poll_card delayed work is perpetually re-armed every 100 jiffies while a MemStick card is powered, so an unbind issued at any moment reliably lands with a pending timer into the freed object, and the disconnect ioctl can be repeated in a loop until the heap is groomed as desired.\nPR:L - Only an ordinary local account with usbfs access (granted to the active seat user by uaccess/plugdev udev rules on common desktop distributions) is needed; the disconnect-claim and device-reset ioctl paths perform no capability check.\nUI:N - The attacker performs the unbind/reset ioctls itself and no action by another user is required; presence of the Realtek USB card reader is a property of the affected configuration, not victim interaction.\nS:U - The use-after-free is confined to kernel slab memory within the same security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The freed 2048-byte object is re-read by the poll worker and, after slab reclaim, the dangling `ucr`/`pdev`/`msh` pointers loaded from it can be steered to dereference attacker-chosen kernel addresses, yielding an arbitrary-read primitive well beyond the initial 8-byte KASAN-reported leak.\nI:H - The `timer_list` and `work_struct` embedded in the freed region give a direct function-pointer hijack via `call_timer_fn()`, and `mutex_lock(\u0026ucr-\u003edev_mutex)` on a sprayed pointer provides a write primitive, so the UAF is exploitable for control-flow hijack and privilege escalation.\nA:H - The unfixed path reliably produces a slab-use-after-free that KASAN reports and that causes kernel oops/panic in ordinary (non-KASAN) kernels, and the trigger can be repeated at will by an unprivileged local user."
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        {
          "url": "https://git.kernel.org/stable/c/4676741a3464b300b486e70585c3c9b692be1632"
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      ],
      "title": "memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove",
      "x_generator": {
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    "datePublished": "2025-04-16T10:20:37.045Z",
    "dateReserved": "2024-12-29T08:45:45.807Z",
    "dateUpdated": "2026-08-05T11:56:02.551Z",
    "state": "PUBLISHED"
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                    "Automatable": "yes"
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                },
                {
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                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: socket: Lookup orig tuple for IPv6 SNAT\n\nnf_sk_lookup_slow_v4 does the conntrack lookup for IPv4 packets to\nrestore the original 5-tuple in case of SNAT, to be able to find the\nright socket (if any). Then socket_match() can correctly check whether\nthe socket was transparent.\n\nHowever, the IPv6 counterpart (nf_sk_lookup_slow_v6) lacks this\nconntrack lookup, making xt_socket fail to match on the socket when the\npacket was SNATed. Add the same logic to nf_sk_lookup_slow_v6.\n\nIPv6 SNAT is used in Kubernetes clusters for pod-to-world packets, as\npods\u0027 addresses are in the fd00::/8 ULA subnet and need to be replaced\nwith the node\u0027s external address. Cilium leverages Envoy to enforce L7\npolicies, and Envoy uses transparent sockets. Cilium inserts an iptables\nprerouting rule that matches on `-m socket --transparent` and redirects\nthe packets to localhost, but it fails to match SNATed IPv6 packets due\nto that missing conntrack lookup."
        }
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/rc/streamzap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.36"
            },
            {
              "lessThan": "2.6.36",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.237",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.181",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.134",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.237",
                  "versionStartIncluding": "2.6.36",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.181",
                  "versionStartIncluding": "2.6.36",
                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.12.23",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.13.11",
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                  "vulnerable": true
                },
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                  "vulnerable": true
                },
                {
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: streamzap: fix race between device disconnection and urb callback\n\nSyzkaller has reported a general protection fault at function\nir_raw_event_store_with_filter(). This crash is caused by a NULL pointer\ndereference of dev-\u003eraw pointer, even though it is checked for NULL in\nthe same function, which means there is a race condition. It occurs due\nto the incorrect order of actions in the streamzap_disconnect() function:\nrc_unregister_device() is called before usb_kill_urb(). The dev-\u003eraw\npointer is freed and set to NULL in rc_unregister_device(), and only\nafter that usb_kill_urb() waits for in-progress requests to finish.\n\nIf rc_unregister_device() is called while streamzap_callback() handler is\nnot finished, this can lead to accessing freed resources. Thus\nrc_unregister_device() should be called after usb_kill_urb().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:11:14.531Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e11652a6514ec805440c1bb3739e6c6236fffcc7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1d518c0bad01abe83c2df880274cb6a39f4a457"
        },
        {
          "url": "https://git.kernel.org/stable/c/30ef7cfee752ca318d5902cb67b60d9797ccd378"
        },
        {
          "url": "https://git.kernel.org/stable/c/15483afb930fc2f883702dc96f80efbe4055235e"
        },
        {
          "url": "https://git.kernel.org/stable/c/adf0ddb914c9e5b3e50da4c97959e82de2df75c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/4db62b60af2ccdea6ac5452fd20e29587ed85f57"
        },
        {
          "url": "https://git.kernel.org/stable/c/8760da4b9d44c36b93b6e4cf401ec7fe520015bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/f656cfbc7a293a039d6a0c7100e1c846845148c1"
        }
      ],
      "title": "media: streamzap: fix race between device disconnection and urb callback",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22027",
    "datePublished": "2025-04-16T14:11:48.210Z",
    "dateReserved": "2024-12-29T08:45:45.807Z",
    "dateUpdated": "2026-05-11T21:11:14.531Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}