#VU104982 Out-of-bounds read in Linux kernel - CVE-2025-21785
Vulnerability identifier: #VU104982
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-2025-21785
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 populate_cache_leaves() function in arch/arm64/kernel/cacheinfo.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
External links
https://git.kernel.org/stable/c/4ff25f0b18d1d0174c105e4620428bcdc1213860
https://git.kernel.org/stable/c/67b99a2b5811df4294c2ad50f9bff3b6a08bd618
https://git.kernel.org/stable/c/715eb1af64779e1b1aa0a7b2ffb81414d9f708e5
https://git.kernel.org/stable/c/875d742cf5327c93cba1f11e12b08d3cce7a88d2
https://git.kernel.org/stable/c/ab90894f33c15b14c1cee6959ab6c8dcb09127f8
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.
