In the Linux kernel, the following vulnerability has been resolved:
x86/sev: Make enc_dec_hypercall() accept a size instead of npages
enc_dec_hypercall() accepted a page count instead of a size, which forced its callers to round up. As a result, non-page aligned vaddrs caused pages to be spuriously marked as decrypted via the encryption status hypercall, which in turn caused consistent corruption of pages during live migration. Live migration requires accurate encryption status information to avoid migrating pages from the wrong perspective.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-toolsUpgrade kernel-libbpfUpgrade kernel-headersUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernelUpgrade kernel-livepatch-6.1.55-75.123Upgrade python3-perf-debuginfoUpgrade kernel-debuginfoUpgrade bpftoolUpgrade python3-perfUpgrade perfUpgrade kernel-libbpf-develUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfo | Feb 20, 2026 | Dec 24, 2025 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.15Upgrade linux-gcpUpgrade linux-gcp-fipsUpgrade linux-gcp-5.4 | Jan 6, 2026 | Dec 24, 2025 |
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