CVE-2026-80921
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < d110b3297f11ef227098b8a82ade2d5f123b7d2f | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 59d51550b5cb916bda037673a721a404b3b47a0d | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < f6079dca67eccb5eabef9f72437948c66dc5131f | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 087c19cc60a8caa1a08e1e434c8be2caf6c27733 | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 7d23489f51109e3ebba5b5db8c5f0185af7b7fdf | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 935eeba276012916c76243e5cbb843efd8fdb75d | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < d4bcd2df6d0d2af916b4fe1a533958778ea7c45b | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6 | affected |
| Linux | Linux | 6b79de4b056e5a2febc0c61233d8f0ad7868e49c < 34d5b5b646c91cfb9338d7a12c955a70ffb8c66b | affected |
| Linux | Linux | 4.20 | affected |
| Linux | Linux | 0 < 4.20 | unaffected |
| Linux | Linux | 5.10.269 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.220 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.187 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.156 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.108 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.49 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.13 <= 7.1.* | unaffected |
| Linux | Linux | 7.2.3 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d110b3297f11ef227098b8a82ade2d5f123b7d2f
- https://git.kernel.org/stable/c/59d51550b5cb916bda037673a721a404b3b47a0d
- https://git.kernel.org/stable/c/f6079dca67eccb5eabef9f72437948c66dc5131f
- https://git.kernel.org/stable/c/087c19cc60a8caa1a08e1e434c8be2caf6c27733
- https://git.kernel.org/stable/c/7d23489f51109e3ebba5b5db8c5f0185af7b7fdf
- https://git.kernel.org/stable/c/935eeba276012916c76243e5cbb843efd8fdb75d
- https://git.kernel.org/stable/c/d4bcd2df6d0d2af916b4fe1a533958778ea7c45b
- https://git.kernel.org/stable/c/29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6
- https://git.kernel.org/stable/c/34d5b5b646c91cfb9338d7a12c955a70ffb8c66b
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