CVE-2023-53996
Published: Dec 24, 2025
Modified: May 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 064ce6c550a0630789978bfec7a13ab2bd1bdcdf - < ba50e7773a99a109a1ea6f753b766a080d3b21ccaffected 064ce6c550a0630789978bfec7a13ab2bd1bdcdf - < 6615212d8e131b45bd9705b0d69cc0d2f624666faffected 064ce6c550a0630789978bfec7a13ab2bd1bdcdf - < 8ae7457e71a320867d868f2622d7c643596e4f43affected 064ce6c550a0630789978bfec7a13ab2bd1bdcdf - < ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2 |
Linux | Linux | affected 5.16unaffected 0 - < 5.16unaffected 6.1.53 - <= 6.1.*unaffected 6.4.16 - <= 6.4.*unaffected 6.5.3 - <= 6.5.*+1 more versions |
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