CVE-2026-64559

—

CVSS 3.1

7.8 high

EPSS

<1%p2

Published

Jul 29, 2026 (Jul 29, 2026)

Modified

Aug 17, 2026

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.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.1%)

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