CVE-2023-53996
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
x86/sev: Make enc_dec_hypercall() accept a size instead of npages
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 064ce6c550a0630789978bfec7a13ab2bd1bdcdf | affected | git | ba50e7773a99a109a1ea6f753b766a080d3b21cc | Unavailable | None listed |
| 064ce6c550a0630789978bfec7a13ab2bd1bdcdf | affected | git | 6615212d8e131b45bd9705b0d69cc0d2f624666f | Unavailable | None listed |
| 064ce6c550a0630789978bfec7a13ab2bd1bdcdf | affected | git | 8ae7457e71a320867d868f2622d7c643596e4f43 | Unavailable | None listed |
| 064ce6c550a0630789978bfec7a13ab2bd1bdcdf | affected | git | ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.16 | Unavailable | None listed |
| 6.1.53 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.4.16 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5.3 | unaffected | semver | Unavailable | 6.5.* | None listed |
| 6.6 | unaffected | original_commit_for_fix | Unavailable | * | None listed |