spi: sn-f-ospi: Fix division by zero
In the Linux kernel, the following vulnerability has been resolved: spi: sn-f-ospi: Fix division by zero When there is no dummy cycle in the spi-nor commands, both dummy bus cycle bytes and width are zero. Because of the cpu's warning when divided by zero, the warning should be avoided. Return just zero to avoid such calculations.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: spi: sn-f-ospi: Fix division by zero When there is no dummy cycle in the spi-nor commands, both dummy bus cycle bytes and width are zero. Because of the cpu's warning when divided by zero, the warning should be avoided. Return just zero to avoid such calculations.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21793.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21793