SB2024070356 - Improper privilege management in Linux kernel dma idxd driver
Published: July 3, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024070356
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 privilege management (CVE-ID: CVE-2021-46919)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improperly imposed permissions within the wq_size_store() function in drivers/dma/idxd/sysfs.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/4ecf25595273203010bc8318c4aee60ad64037ae
- https://git.kernel.org/stable/c/05b7791c4c4aa8304368fdc55ae911f6b34e7281
- https://git.kernel.org/stable/c/0fff71c5a311e1264988179f7dcc217fda15fadd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12