CVE-2026-64558
In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in pkey_pckmo handler implementation Explicitly check the length of the target buffer in the pkey_pckmo implementation of the key_to_protkey() handler function. The handler function fails, if the generated output data exceeds the length of the provided target buffer.
- Published Jul 29, 2026
- CVSS 7.8 high
- 0.1% chance of exploitation in the next 30 days (EPSS)
- A fix is available