#VU93690 Input validation error in Linux kernel - CVE-2021-47176
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93690
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-2021-47176
CWE-ID: CWE-20
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 improper input validation within the dasd_fba_setup_blk_queue() function in drivers/s390/block/dasd_fba.c, within the dasd_diag_setup_blk_queue() function in drivers/s390/block/dasd_diag.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/6a16810068e70959bc1df686424aa35ce05578f1
- https://git.kernel.org/stable/c/aa8579bc084673c651204f7cd0d6308a47dffc16
- https://git.kernel.org/stable/c/a16be88a3d7e5efcb59a15edea87a8bd369630c6
- https://git.kernel.org/stable/c/c0c8a8397fa8a74d04915f4d3d28cb4a5d401427
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.175
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.237