SB20241022141 - Improper locking in Linux kernel cpu sgx
Published: October 22, 2024 Updated: May 12, 2025
Security Bulletin ID
SB20241022141
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) Improper locking (CVE-ID: CVE-2024-49856)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the __sgx_alloc_epc_page() function in arch/x86/kernel/cpu/sgx/main.c. 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/40fb64257dab507d86b5f1f2a62f3669ef0c91a8
- https://git.kernel.org/stable/c/20c96d0aaabfe361fc2a11c173968dc67feadbbf
- https://git.kernel.org/stable/c/fb2d057539eda67ec7cfc369bf587e6518a9b99d
- https://git.kernel.org/stable/c/0f89fb4042c08fd143bfc28af08bf6c8a0197eea
- https://git.kernel.org/stable/c/8132510c915815e6b537ab937d94ed66893bc7b8
- https://git.kernel.org/stable/c/9c936844010466535bd46ea4ce4656ef17653644
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.168
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.113
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.54