CVE-2026-68385
s390/checksum: Fix csum_partial() without vector facility
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 10, 2026 |
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Affected Versions
Linux / Linux
dcd3e1de9d17dc43dfed87a9fc814b9dec508043 < 5fc0a2a6eeb99cac991242bb48796c7749ce3261 dcd3e1de9d17dc43dfed87a9fc814b9dec508043 < 1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722 dcd3e1de9d17dc43dfed87a9fc814b9dec508043 < 898bb2814f38399108bdd2113f38d97383a7036a dcd3e1de9d17dc43dfed87a9fc814b9dec508043 < 4bb06b60d982355e22647b3d12d6619419f8c1fa
Linux / Linux
6.9
References
git.kernel.org: https://git.kernel.org/stable/c/5fc0a2a6eeb99cac991242bb48796c7749ce3261 git.kernel.org: https://git.kernel.org/stable/c/1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722 git.kernel.org: https://git.kernel.org/stable/c/898bb2814f38399108bdd2113f38d97383a7036a git.kernel.org: https://git.kernel.org/stable/c/4bb06b60d982355e22647b3d12d6619419f8c1fa