KVM: s390: vsie: zero stale crypto bits
Summary
| CVE | CVE-2026-80921 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-09 17:17:47 UTC |
| Updated | 2026-09-10 06:17:06 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits When shadowing crypto access bits from a format0 apcb (crycb 0 or 1), the bits 64..255 are unchanged from whatever is in the vsie page in the crycb and thus in the apcb. This gives a nested guest potential access to a device no longer available. Zero out the remaining bits. |
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
| 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 6b79de4b056e5a2febc0c61233d8f0ad7868e49c d110b3297f11ef227098b8a82ade2d5f123b7d2f git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 59d51550b5cb916bda037673a721a404b3b47a0d git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c f6079dca67eccb5eabef9f72437948c66dc5131f git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 087c19cc60a8caa1a08e1e434c8be2caf6c27733 git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 7d23489f51109e3ebba5b5db8c5f0185af7b7fdf git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 935eeba276012916c76243e5cbb843efd8fdb75d git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c d4bcd2df6d0d2af916b4fe1a533958778ea7c45b git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6 git | Not specified |
| CNA | Linux | Linux | affected 6b79de4b056e5a2febc0c61233d8f0ad7868e49c 34d5b5b646c91cfb9338d7a12c955a70ffb8c66b git | Not specified |
| CNA | Linux | Linux | affected 4.20 | Not specified |
| CNA | Linux | Linux | unaffected 4.20 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.269 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.220 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.187 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.156 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.108 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.49 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.13 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.3 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/087c19cc60a8caa1a08e1e434c8be2caf6c27733 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f6079dca67eccb5eabef9f72437948c66dc5131f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/935eeba276012916c76243e5cbb843efd8fdb75d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/59d51550b5cb916bda037673a721a404b3b47a0d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d4bcd2df6d0d2af916b4fe1a533958778ea7c45b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7d23489f51109e3ebba5b5db8c5f0185af7b7fdf | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d110b3297f11ef227098b8a82ade2d5f123b7d2f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/34d5b5b646c91cfb9338d7a12c955a70ffb8c66b | 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.