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VULNERABILITIES

CVE-2026-68385 Details

Description

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().

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722 kernel.org
https://git.kernel.org/stable/c/4bb06b60d982355e22647b3d12d6619419f8c1fa kernel.org
https://git.kernel.org/stable/c/5fc0a2a6eeb99cac991242bb48796c7749ce3261 kernel.org
https://git.kernel.org/stable/c/898bb2814f38399108bdd2113f38d97383a7036a kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-68385
NVD Published Date:
Aug 10, 2026
NVD Last Modified:
Aug 17, 2026
Source:
kernel.org
CVE-2026-68385 Details - Not Deferred