SB20240604108 - Out-of-bounds read in Linux kernel sched
Published: June 4, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240604108
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) Out-of-bounds read (CVE-ID: CVE-2021-46993)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the DEFINE_STATIC_KEY_FALSE() function in kernel/sched/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/687f523c134b7f0bd040ee1230f6d17990d54172
- https://git.kernel.org/stable/c/f7347c85490b92dd144fa1fba9e1eca501656ab3
- https://git.kernel.org/stable/c/3da3f804b82a0a382d523a21acf4cf3bb35f936d
- https://git.kernel.org/stable/c/42ee47c7e3569d9a0e2cb5053c496d97d380472f
- https://git.kernel.org/stable/c/6d2f8909a5fabb73fe2a63918117943986c39b6c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.120