Stack-based buffer overflow in Linux kernel - CVE-2021-47465
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91296
CSH Severity: 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-2021-47465
CWE-ID: CWE-121
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 stack overflow within the _GLOBAL() and REST_NVGPRS() functions in arch/powerpc/kvm/book3s_hv_rmhandlers.S. 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/80bbb0bc3a0288442f7fe6fc514f4ee1cb06ccb7
- https://git.kernel.org/stable/c/fbd724c49bead048ae9fc1a5b7bff2fb3e54f855
- https://git.kernel.org/stable/c/6d077c37c4643394b1bae9682da48164fc147ea8
- https://git.kernel.org/stable/c/9b4416c5095c20e110c82ae602c254099b83b72f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.76
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.156