SB2024070355 - Improper privilege management in Linux kernel dma idxd driver
Published: July 3, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024070355
CSH 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 vulnerability.
1) Improper privilege management (CVE-ID: CVE-2021-46918)
CWE-ID: CWE-269 - Improper Privilege Management
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improperly imposed permissions within the idxd_setup_interrupts() and idxd_shutdown() functions in drivers/dma/idxd/init.c, within the idxd_device_drain_pasid() function in drivers/dma/idxd/device.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.