s390/vfio_ccw: Ensure index for read/write regions are within range
Summary
| CVE | CVE-2026-80552 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-26 15:17:09 UTC |
| Updated | 2026-10-16 20:17:59 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Ensure index for read/write regions are within range The introduction of the capability chain rightly clamped the region indexes to the range of the capabilities itself, but neglected to do so for the existing read/write regions which should also be enforced. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.001760000 probability, percentile 0.066530000 (date 2026-10-16)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 8.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99 git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 d3b1e38404b22df5a1f93019f2bb656feaad5ae3 git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 79ea5e0c4c8a9842ae85f45062d947b3297dfc07 git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 d597fa1273802941c7801202135976fecc29672b git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 649badf3a2fd8929e40198603a2cb21b74c21700 git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf git | Not specified |
| CNA | Linux | Linux | affected db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 9f5f9a78fedc45bc29d6a0a64e3a3472361afae5 git | Not specified |
| CNA | Linux | Linux | affected 5.2 | Not specified |
| CNA | Linux | Linux | unaffected 5.2 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.218 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.184 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.153 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.105 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.46 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.10 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/649badf3a2fd8929e40198603a2cb21b74c21700 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d597fa1273802941c7801202135976fecc29672b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9f5f9a78fedc45bc29d6a0a64e3a3472361afae5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/79ea5e0c4c8a9842ae85f45062d947b3297dfc07 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d3b1e38404b22df5a1f93019f2bb656feaad5ae3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.