s390/vfio_ccw: Ensure first IDAW remains constant
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K boundary like all others, and so is read separately to accurately calculate the size of the buffer needed to read the full IDAL. Verify that the address found in the first IDAW is unchanged between reads, to ensure a consistent set of IDAWs being worked with.
CVE-2026-80551
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-2026-80551
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": "01aa26c672c0eb771de4aaa2a8ccf6055778887b",
"lessThan": "460b977a4e71cc319fdadf91c193ec3beaa57263",
"versionType": "git"
},
{
"status": "affected",
"version": "01aa26c672c0eb771de4aaa2a8ccf6055778887b",
"lessThan": "0d46c2565f173bcddcdcaf44a4f69789a20535e2",
"versionType": "git"
},
{
"status": "affected",
"version": "01aa26c672c0eb771de4aaa2a8ccf6055778887b",
"lessThan": "08ef2a82115690d6e229615872ac1731af732497",
"versionType": "git"
},
{
"status": "affected",
"version": "01aa26c672c0eb771de4aaa2a8ccf6055778887b",
"lessThan": "fc59e9482117ebdccd6dc7fa8082f8b980fd021e",
"versionType": "git"
},
{
"status": "affected",
"version": "01aa26c672c0eb771de4aaa2a8ccf6055778887b",
"lessThan": "565bef268d75bf7df665bce6923a88cd0eb74592",
"versionType": "git"
}
],
"programFiles": [
"drivers/s390/cio/vfio_ccw_cp.c",
"drivers/s390/cio/vfio_ccw_cp.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.154",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/s390/cio/vfio_ccw_cp.c",
"drivers/s390/cio/vfio_ccw_cp.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80551
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #34320 · Revision 1
- Added to Heist Feed
- Publisher date