SB2024053037 - Memory leak in Linux kernel
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053037
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) Memory leak (CVE-ID: CVE-2021-47553)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the init_idle() and idle_task_exit() functions in kernel/sched/core.c, within the bringup_cpu() function in kernel/cpu.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/e6ee7abd6bfe559ad9989004b34c320fd638c526
- https://git.kernel.org/stable/c/229c555260cb9c1ccdab861e16f0410f1718f302
- https://git.kernel.org/stable/c/dce1ca0525bfdc8a69a9343bc714fbc19a2f04b3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.83
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16