#VU104984 Out-of-bounds read in Linux kernel - CVE-2025-21794

Vulnerability identifier: #VU104984

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-21794

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the thrustmaster_interrupts() function in drivers/hid/hid-thrustmaster.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0b43d98ff29be3144e86294486b1373b5df74c0e
https://git.kernel.org/stable/c/436f48c864186e9413d1b7c6e91767cc9e1a65b8
https://git.kernel.org/stable/c/73e36a699b9f46322ffb81f072a24e64f728dba7
https://git.kernel.org/stable/c/cdd9a1ea23ff1a272547217100663e8de4eada40
https://git.kernel.org/stable/c/f3ce05283f6cb6e19c220f5382def43dc5bd56b9

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.