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CVE-2025-40035— Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak

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，该漏洞源于未初始化uinput_ff_upload_compat结构体，可能导致信息泄露。

AI Predicted 5.3 Difficulty: Easy EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2d56f3a32c0e62f99c043d2579840f9731fe5855< 1b317796013f666ae5040edbf0f230ec61496d42 affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< 877172b97786ed1678640dff0b2d35abb328844c affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< e63aade22a33e77b93c98c9f02db504d897a76b4 affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< 933b87c4590b42500299f00ff55f555903056803 affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< fd8a23ecbc602d00e47b27f20b07350867d0ebe5 affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< 48c96b7e9e03516936d6deba54b5553097eae817 affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< f5e1f3b85aadce74268c46676772c3e9fa79897e affected
2d56f3a32c0e62f99c043d2579840f9731fe5855< d3366a04770eea807f2826cbdb96934dd8c9bf79 affected
… +10 more rows
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I. Basic Information for CVE-2025-40035

Vulnerability Information
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Vulnerability Title
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Struct ff_effect_compat is embedded twice inside uinput_ff_upload_compat, contains internal padding. In particular, there is a hole after struct ff_replay to satisfy alignment requirements for the following union member. Without clearing the structure, copy_to_user() may leak stack data to userspace. Initialize ff_up_compat to zero before filling valid fields.
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，该漏洞源于未初始化uinput_ff_upload_compat结构体，可能导致信息泄露。
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 2d56f3a32c0e62f99c043d2579840f9731fe5855 ~ 1b317796013f666ae5040edbf0f230ec61496d42 -
Linux Linux 2.6.29 -

II. Public POCs for CVE-2025-40035

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III. Intelligence Information for CVE-2025-40035

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Patches & Fixes for CVE-2025-40035 (2)

Same Patch Batch · Linux · 2025-10-28 · 58 CVEs total

CVE-2025-40074 9.8 CRITICAL ipv4: start using dst_dev_rcu()
CVE-2025-40043 8.8 HIGH net: nfc: nci: Add parameter validation for packet data
CVE-2025-40039 8.8 HIGH ksmbd: Fix race condition in RPC handle list access
CVE-2025-40058 8.8 HIGH iommu/vt-d: Disallow dirty tracking if incoherent page walk
CVE-2025-40046 8.6 HIGH io_uring/zcrx: fix overshooting recv limit
CVE-2025-40068 8.4 HIGH fs: ntfs3: Fix integer overflow in run_unpack()
CVE-2025-40075 8.1 HIGH tcp_metrics: use dst_dev_net_rcu()
CVE-2025-40026 7.9 HIGH KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
CVE-2025-40027 7.8 HIGH net/9p: fix double req put in p9_fd_cancelled
CVE-2025-40054 7.8 HIGH f2fs: fix UAF issue in f2fs_merge_page_bio()
CVE-2025-40045 7.8 HIGH ASoC: codecs: wcd937x: set the comp soundwire port correctly
CVE-2025-40047 7.8 HIGH io_uring/waitid: always prune wait queue entry in io_waitid_wait()
CVE-2025-40051 7.8 HIGH vhost: vringh: Modify the return value check
CVE-2025-40025 7.8 HIGH f2fs: fix to do sanity check on node footer for non inode dnode
CVE-2025-40061 7.8 HIGH RDMA/rxe: Fix race in do_task() when draining
CVE-2025-40064 7.8 HIGH smc: Fix use-after-free in __pnet_find_base_ndev().
CVE-2025-40067 7.8 HIGH fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist
CVE-2025-40069 7.8 HIGH drm/msm: Fix obj leak in VM_BIND error path
CVE-2025-40079 7.8 HIGH riscv, bpf: Sign extend struct ops return values properly
CVE-2025-40081 7.8 HIGH perf: arm_spe: Prevent overflow in PERF_IDX2OFF()

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40035

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