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.

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/02028a24e26d85262ab9c8fc4344e1f3503007fc
https://git.kernel.org/stable/c/1ac287e2af9a9112fe271427ef45eceb26bce8b4
https://git.kernel.org/stable/c/433e5e70cdc1edf382d28d08a885b22e2b98b7da
https://git.kernel.org/stable/c/614aa0491c7a190556c2345dddee0b6f5ed90989

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-29 17:16

Updated : 2026-08-17 05:18

NVD link : CVE-2026-64558

Mitre link : CVE-2026-64558

CVE.ORG link : CVE-2026-64558

JSON object : View

Products Affected

No product.

CWE

No CWE.

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