SB2024060812 - Stack-based buffer overflow in Linux kernel powerpc kvm
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060812
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Stack-based buffer overflow (CVE-ID: CVE-2021-47465)
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.
References
- 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