s390/checksum: Fix csum_partial() without vector facility
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().
CVE-2026-68385
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68385
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "dcd3e1de9d17dc43dfed87a9fc814b9dec508043",
"lessThan": "5fc0a2a6eeb99cac991242bb48796c7749ce3261",
"versionType": "git"
},
{
"status": "affected",
"version": "dcd3e1de9d17dc43dfed87a9fc814b9dec508043",
"lessThan": "1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722",
"versionType": "git"
},
{
"status": "affected",
"version": "dcd3e1de9d17dc43dfed87a9fc814b9dec508043",
"lessThan": "898bb2814f38399108bdd2113f38d97383a7036a",
"versionType": "git"
},
{
"status": "affected",
"version": "dcd3e1de9d17dc43dfed87a9fc814b9dec508043",
"lessThan": "4bb06b60d982355e22647b3d12d6619419f8c1fa",
"versionType": "git"
}
],
"programFiles": [
"arch/s390/lib/csum-partial.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/s390/lib/csum-partial.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68385
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #41712 · Revision 1
- Added to Heist Feed
- Publisher date