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CVE-2025-39824— HID: asus: fix UAF via HID_CLAIMED_INPUT validation

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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HID_CLAIMED_INPUT验证不当，可能导致释放后重用。

AI Predicted 6.5 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 9ce12d8be12c94334634dd57050444910415e45f< 9a9e4a8317437bf944fa017c66e1e23a0368b5c7 affected
9ce12d8be12c94334634dd57050444910415e45f< 7170122e2ae4ab378c9cdf7cc54dea8b0abbbca5 affected
9ce12d8be12c94334634dd57050444910415e45f< eaae728e7335b5dbad70966e2bd520a731fdf7b2 affected
9ce12d8be12c94334634dd57050444910415e45f< a8ca8fe7f516d27ece3afb995c3bd4d07dcbe62c affected
9ce12d8be12c94334634dd57050444910415e45f< 5f3c0839b173f7f33415eb098331879e547d1d2d affected
9ce12d8be12c94334634dd57050444910415e45f< c0d77e3441a92d0b4958193c9ac1c3f81c6f1d1c affected
9ce12d8be12c94334634dd57050444910415e45f< 72a4ec018c9e9bc52f4f80eb3afb5d6a6b752275 affected
9ce12d8be12c94334634dd57050444910415e45f< d3af6ca9a8c34bbd8cff32b469b84c9021c9e7e4 affected
… +10 more rows
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I. Basic Information for CVE-2025-39824

Vulnerability Information
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Vulnerability Title
HID: asus: fix UAF via HID_CLAIMED_INPUT validation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: asus: fix UAF via HID_CLAIMED_INPUT validation After hid_hw_start() is called hidinput_connect() will eventually be called to set up the device with the input layer since the HID_CONNECT_DEFAULT connect mask is used. During hidinput_connect() all input and output reports are processed and corresponding hid_inputs are allocated and configured via hidinput_configure_usages(). This process involves slot tagging report fields and configuring usages by setting relevant bits in the capability bitmaps. However it is possible that the capability bitmaps are not set at all leading to the subsequent hidinput_has_been_populated() check to fail leading to the freeing of the hid_input and the underlying input device. This becomes problematic because a malicious HID device like a ASUS ROG N-Key keyboard can trigger the above scenario via a specially crafted descriptor which then leads to a user-after-free when the name of the freed input device is written to later on after hid_hw_start(). Below, report 93 intentionally utilises the HID_UP_UNDEFINED Usage Page which is skipped during usage configuration, leading to the frees. 0x05, 0x0D, // Usage Page (Digitizer) 0x09, 0x05, // Usage (Touch Pad) 0xA1, 0x01, // Collection (Application) 0x85, 0x0D, // Report ID (13) 0x06, 0x00, 0xFF, // Usage Page (Vendor Defined 0xFF00) 0x09, 0xC5, // Usage (0xC5) 0x15, 0x00, // Logical Minimum (0) 0x26, 0xFF, 0x00, // Logical Maximum (255) 0x75, 0x08, // Report Size (8) 0x95, 0x04, // Report Count (4) 0xB1, 0x02, // Feature (Data,Var,Abs) 0x85, 0x5D, // Report ID (93) 0x06, 0x00, 0x00, // Usage Page (Undefined) 0x09, 0x01, // Usage (0x01) 0x15, 0x00, // Logical Minimum (0) 0x26, 0xFF, 0x00, // Logical Maximum (255) 0x75, 0x08, // Report Size (8) 0x95, 0x1B, // Report Count (27) 0x81, 0x02, // Input (Data,Var,Abs) 0xC0, // End Collection Below is the KASAN splat after triggering the UAF: [ 21.672709] ================================================================== [ 21.673700] BUG: KASAN: slab-use-after-free in asus_probe+0xeeb/0xf80 [ 21.673700] Write of size 8 at addr ffff88810a0ac000 by task kworker/1:2/54 [ 21.673700] [ 21.673700] CPU: 1 UID: 0 PID: 54 Comm: kworker/1:2 Not tainted 6.16.0-rc4-g9773391cf4dd-dirty #36 PREEMPT(voluntary) [ 21.673700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 21.673700] Call Trace: [ 21.673700] <TASK> [ 21.673700] dump_stack_lvl+0x5f/0x80 [ 21.673700] print_report+0xd1/0x660 [ 21.673700] kasan_report+0xe5/0x120 [ 21.673700] __asan_report_store8_noabort+0x1b/0x30 [ 21.673700] asus_probe+0xeeb/0xf80 [ 21.673700] hid_device_probe+0x2ee/0x700 [ 21.673700] really_probe+0x1c6/0x6b0 [ 21.673700] __driver_probe_device+0x24f/0x310 [ 21.673700] driver_probe_device+0x4e/0x220 [...] [ 21.673700] [ 21.673700] Allocated by task 54: [ 21.673700] kasan_save_stack+0x3d/0x60 [ 21.673700] kasan_save_track+0x18/0x40 [ 21.673700] kasan_save_alloc_info+0x3b/0x50 [ 21.673700] __kasan_kmalloc+0x9c/0xa0 [ 21.673700] __kmalloc_cache_noprof+0x139/0x340 [ 21.673700] input_allocate_device+0x44/0x370 [ 21.673700] hidinput_connect+0xcb6/0x2630 [ 21.673700] hid_connect+0xf74/0x1d60 [ 21.673700] hid_hw_start+0x8c/0x110 [ 21.673700] asus_probe+0x5a3/0xf80 [ 21.673700] hid_device_probe+0x2ee/0x700 [ 21.673700] really_probe+0x1c6/0x6b0 [ 21.673700] __driver_probe_device+0x24f/0x310 [ 21.673700] driver_probe_device+0x4e/0x220 [...] [ 21.673700] [ 21.673700] Freed by task 54: [ 21.673700] kasan_save_stack+0x3d/0x60 [ 21.673700] kasan_save_track+0x18/0x40 [ 21.673700] kasan_save_free_info+0x3f/0x60 [ 21.673700] __kasan_slab_free+0x3c/0x50 [ 21.673700] kfre ---truncated---
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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HID_CLAIMED_INPUT验证不当，可能导致释放后重用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9ce12d8be12c94334634dd57050444910415e45f ~ 9a9e4a8317437bf944fa017c66e1e23a0368b5c7 -
Linux Linux 4.10 -

II. Public POCs for CVE-2025-39824

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III. Intelligence Information for CVE-2025-39824

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50350 9.8 CRITICAL scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2025-39806 8.8 HIGH HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()
CVE-2023-53305 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free
CVE-2023-53297 8.8 HIGH Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
CVE-2025-39827 8.8 HIGH net: rose: include node references in rose_neigh refcount
CVE-2025-39826 8.8 HIGH net: rose: convert 'use' field to refcount_t
CVE-2023-53315 8.8 HIGH wifi: ath11k: Fix SKB corruption in REO destination ring
CVE-2023-53322 8.8 HIGH scsi: qla2xxx: Wait for io return on terminate rport
CVE-2025-39809 8.4 HIGH HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length
CVE-2023-53333 8.2 HIGH netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one
CVE-2025-39818 7.8 HIGH HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save
CVE-2025-39810 7.8 HIGH bnxt_en: Fix memory corruption when FW resources change during ifdown
CVE-2023-53311 7.8 HIGH nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput
CVE-2023-53314 7.8 HIGH fbdev/ep93xx-fb: Do not assign to struct fb_info.dev
CVE-2025-39815 7.8 HIGH RISC-V: KVM: fix stack overrun when loading vlenb
CVE-2023-53286 7.8 HIGH RDMA/mlx5: Return the firmware result upon destroying QP/RQ
CVE-2022-50341 7.8 HIGH cifs: fix oops during encryption
CVE-2025-39821 7.8 HIGH perf: Avoid undefined behavior from stopping/starting inactive events
CVE-2023-53274 7.8 HIGH clk: mediatek: mt8183: Add back SSPM related clocks
CVE-2023-53263 7.8 HIGH drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

Showing top 20 of 115 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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