CVE-2023-53996
x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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 | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
064ce6c550a0630789978bfec7a13ab2bd1bdcdf < ba50e7773a99a109a1ea6f753b766a080d3b21cc 064ce6c550a0630789978bfec7a13ab2bd1bdcdf < 6615212d8e131b45bd9705b0d69cc0d2f624666f 064ce6c550a0630789978bfec7a13ab2bd1bdcdf < 8ae7457e71a320867d868f2622d7c643596e4f43 064ce6c550a0630789978bfec7a13ab2bd1bdcdf < ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2
Linux / Linux
5.16
References
git.kernel.org: https://git.kernel.org/stable/c/ba50e7773a99a109a1ea6f753b766a080d3b21cc git.kernel.org: https://git.kernel.org/stable/c/6615212d8e131b45bd9705b0d69cc0d2f624666f git.kernel.org: https://git.kernel.org/stable/c/8ae7457e71a320867d868f2622d7c643596e4f43 git.kernel.org: https://git.kernel.org/stable/c/ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2