#VU104994 NULL pointer dereference in Linux kernel - CVE-2025-21779
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104994
Vulnerability risk: Low
CVSSv4.0: 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-2025-21779
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the kvm_hv_send_ipi() and kvm_get_hv_cpuid() functions in arch/x86/kvm/hyperv.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/5393cf22312418262679eaadb130d608c75fe690
- https://git.kernel.org/stable/c/874ff13c73c45ecb38cb82191e8c1d523f0dc81b
- https://git.kernel.org/stable/c/a8de7f100bb5989d9c3627d3a223ee1c863f3b69
- https://git.kernel.org/stable/c/aca8be4403fb90db7adaf63830e27ebe787a76e8
- https://git.kernel.org/stable/c/ca29f58ca374c40a0e69c5306fc5c940a0069074
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.4