Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in PKEY_VERIFYPROTK ioctl Explicitly check the buffer length request structure provided by user-space and fail, if it exceeds the buffer size.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7
- https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac
- https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554
- https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970
FAQ
What is CVE-2026-64559?
CVE-2026-64559 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in PKEY_VERIFYPROTK ioctl Explicitly check the buffer length request structure provided by user-space and ...
How severe is CVE-2026-64559?
CVE-2026-64559 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64559?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.