CVE-2026-79608
Fixed in a distro release EPSS <1%CVSS 9.8
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
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.21 | xen | 4.19.6-r2 |
| Alpine 3.22 | xen | 4.20.4-r2 |
| Alpine 3.23 | xen | 4.20.4-r2 |
| Alpine 3.24 | xen | 4.21.2-r2 |
| Debian 12 | xen | no fix |
| Debian 13 | xen | 4.20.4+39-gf1e1321c87-0+deb13u1 |
| Debian 14 | xen | 4.20.4+39-gf1e1321c87-1 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| Ubuntu 20.04 LTS | xen | no fix |
| Ubuntu 22.04 LTS | xen | no fix |
| Ubuntu 24.04 LTS | xen | no fix |
| Ubuntu 26.04 LTS | xen | no fix |
| Ubuntu 26.10 | xen | no fix |
| openSUSE Tumbleweed | xen | 4.22.0_06-1.1 |