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Vulnerability record · CVE-2026-64559 · published 29 July 2026

CVE-2026-64559: In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in PKEY_VERIFYPRO…

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.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.7% Received
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Aug 2026Last modified by NVD

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

References

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Source: NIST National Vulnerability Database (record CVE-2026-64559), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.