#VU93741 Improper privilege management in Linux kernel - CVE-2021-46919
Published: July 3, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93741
Vulnerability risk: Low
CVSSv4.0: 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
CVE-ID: CVE-2021-46919
CWE-ID: CWE-269
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- 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