CVE-2026-68385

In the Linux kernel, the following vulnerability has been resolved: s390/checksum: Fix csum_partial() without vector facility Currently csum_partial() calls csum_copy() with copy=false and dst=NULL. On machines without the vector facility, csum_copy() falls back to cksm(dst, ...), causing the checksum to be calculated from address zero instead of the source buffer. The VX implementation already checksums data loaded from src. Make the fallback do the same by passing src to cksm().

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722
https://git.kernel.org/stable/c/4bb06b60d982355e22647b3d12d6619419f8c1fa
https://git.kernel.org/stable/c/5fc0a2a6eeb99cac991242bb48796c7749ce3261
https://git.kernel.org/stable/c/898bb2814f38399108bdd2113f38d97383a7036a

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-17 06:17

NVD link : CVE-2026-68385

Mitre link : CVE-2026-68385

CVE.ORG link : CVE-2026-68385

JSON object : View

Products Affected

No product.

CWE

No CWE.

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