Unrated
x86/AMD: ineffectual Zenbleed workaround
The workaround for XSA-433 (Zenbleed, CVE-2023-20593) was later re-worked to better integrate with other manipulations of the same MSR. In this rework an inverted conditional was introduced, resulting in the workaround to not be applied when needed and vice versa. For more details, see: http://xenbits.xen.org/xsa/advisory-433.html
Announced Group revision 1
Original source ↗CVE-2026-79608
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-79608
Xen
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Xen",
"product": "Xen",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-515"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-79608
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #42420 · Revision 1
- Added to Heist Feed
- Publisher date