DEBIAN-CVE-2023-53996

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2023-53996
Published: 24 Dec 2025, 11:15
Last modified:28 Apr 2026, 20:27

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Dec 2025, 11:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:27
Last Modified
Vulnerability information updated

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.

Affected Systems

  • debian•linux

    < 6.1.55-1 | < 6.5.3-1 | < 6.5.3-1

References (1)