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-headersUpgrade python3-perfUpgrade kernel-livepatch-6.1.55-75.123Upgrade kernel-tools-debuginfoUpgrade kernel-libbpf-develUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernelUpgrade perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade perf-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-fipsUpgrade linux-gcp-5.4Upgrade linux-gcpUpgrade linux-gcp-5.15 | Jan 6, 2026 | Dec 24, 2025 |
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