SB20240603208 - Improper error handling in Linux kernel mcb driver
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603208
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 error handling (CVE-ID: CVE-2021-47361)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the mcb_alloc_bus() function in drivers/mcb/mcb-core.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/8a558261fa57a6deefb0925ab1829f698b194aea
- https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f
- https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b
- https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0
- https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0
- https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499
- https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.249
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.285
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.70
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.150