SB20240620221 - Improper error handling in Linux kernel mm
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620221
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-2021-47492)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the collapse_file() function in mm/khugepaged.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/69a7fa5cb0de06c8956b040f19a7248c8c8308ca
- https://git.kernel.org/stable/c/5e669d8ab30ab61dec3c36e27b4711f07611e6fc
- https://git.kernel.org/stable/c/74c42e1baacf206338b1dd6b6199ac964512b5bb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15