SB20240702131 - Input validation error in Linux kernel s390 block driver
Published: July 2, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240702131
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) Input validation error (CVE-ID: CVE-2021-47176)
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.
References
- 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