Buffer overflow in Linux kernel - CVE-2025-39815
Published: September 16, 2025
Vulnerability identifier: #VU115630
CSH Severity: Low
CVSS v4.0: 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-2025-39815
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the kvm_riscv_vcpu_set_reg_vector() function in arch/riscv/kvm/vcpu_vector.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-39815
Install update from vendor's repository.