CVE-2026-64559

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7	Patch
https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac	Patch
https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554	Patch
https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

13 Nov 2026, 18:20

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel::::::::
First Time		Linux linux Kernel Linux
References	~~() https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7 -~~	() https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7 - Patch
References	~~() https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac -~~	() https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac - Patch
References	~~() https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554 -~~	() https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554 - Patch
References	~~() https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970 -~~	() https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970 - Patch

19 Oct 2026, 21:17

Type	Values Removed	Values Added
CWE		CWE-125

Information

Published : 2026-07-29 17:16

Updated : 2026-11-13 18:20

NVD link : CVE-2026-64559

Mitre link : CVE-2026-64559

CVE.ORG link : CVE-2026-64559

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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