CVE-2025-39824: Linux kernel · HID: asus: fix UAF via HID_CLAIMED_INPUT validation
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in eaae728e7335b5dbad70966e2bd520a731fdf7b2 : patch Linux kernel soon.
Data as of 5 Nov 2026, 21:35 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in eaae728e7335b5dbad70966e2bd520a731fdf7b2, d3af6ca9a8c34bbd8cff32b469b84c9021c9e7e4, c0d77e3441a92d0b4958193c9ac1c3f81c6f1d1c +5
Exploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
AI-suggested
A fix for this vulnerability has been implemented and is available in the Linux kernel source code as indicated by the fixed commit hashes. Users and administrators should update their Linux kernel to a version that includes these fixes to mitigate the issue. No additional mitigation steps are indicated by the vendor advisory.
Description
A use-after-free (UAF) vulnerability was discovered and fixed in the Linux kernel's ASUS HID driver. The flaw occurs during device initialization when a specially crafted HID descriptor causes the input device to be freed prematurely, leading to a write to freed memory. This issue was triggered by a malicious HID device, such as an ASUS ROG N-Key keyboard, using an undefined usage page in its report descriptor. The vulnerability was addressed by adding validation to prevent the UAF condition.
References
- git.kernel.org/stable/c/9a9e4a8317437bf944fa017c66e1e23a0368b5c7 (opens in a new tab)
- git.kernel.org/stable/c/7170122e2ae4ab378c9cdf7cc54dea8b0abbbca5 (opens in a new tab)
- git.kernel.org/stable/c/eaae728e7335b5dbad70966e2bd520a731fdf7b2 (opens in a new tab)
- git.kernel.org/stable/c/a8ca8fe7f516d27ece3afb995c3bd4d07dcbe62c (opens in a new tab)
- git.kernel.org/stable/c/5f3c0839b173f7f33415eb098331879e547d1d2d (opens in a new tab)
- git.kernel.org/stable/c/c0d77e3441a92d0b4958193c9ac1c3f81c6f1d1c (opens in a new tab)
- git.kernel.org/stable/c/72a4ec018c9e9bc52f4f80eb3afb5d6a6b752275 (opens in a new tab)
- git.kernel.org/stable/c/d3af6ca9a8c34bbd8cff32b469b84c9021c9e7e4 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-032379.html (opens in a new tab)