SB20250227155 - Division by zero in Linux kernel spi driver
Published: February 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250227155
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) Division by zero (CVE-ID: CVE-2025-21793)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a division by zero error within the f_ospi_get_dummy_cycle() function in drivers/spi/spi-sn-f-ospi.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/3588b1c0fde2f58d166e3f94a5a58d64b893526c
- https://git.kernel.org/stable/c/4df6f005bef04a3dd16c028124a1b5684db3922b
- https://git.kernel.org/stable/c/7434135553bc03809a55803ee6a8dcaae6240d55
- https://git.kernel.org/stable/c/966328191b4c389c0f2159fa242915f51cbc1679
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.79