KVM: s390: pci: Reject adapter interrupt forwarding if already enabled
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its already enabled for the zPCI device. This also fixes overwriting and thus leaking resources when the ioctl is called multiple times for the same device.
CVE-2026-74515
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-2026-74515
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": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "642d2d1067f7c4d753ae0e3ba5bc98b43cfe3c70",
"versionType": "git"
},
{
"status": "affected",
"version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "78d9648e7e960546d5b72504a0b0358cd8bb1e9d",
"versionType": "git"
},
{
"status": "affected",
"version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "6be1ff49ba81f96a6fa55915e6d920be43ac57cc",
"versionType": "git"
},
{
"status": "affected",
"version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "6837f0ae85fd54cf64c8a0c7c530bba2fae0a207",
"versionType": "git"
},
{
"status": "affected",
"version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "591952b63a9f976da7d49f719f36ec826ee2a575",
"versionType": "git"
},
{
"status": "affected",
"version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
"lessThan": "8fa01be5a6149404adb82c0979a78f6347edd3ef",
"versionType": "git"
}
],
"programFiles": [
"arch/s390/kvm/pci.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.151",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/s390/kvm/pci.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74515
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33191 · Revision 1
- Added to Heist Feed
- Publisher date