CVSS v3
7.8
HIGH
Score EPSS
0.2 %
probabilité d’exploitation au 2026-09-28
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in forwarding such machine checks into the guest. This also simplifies the machine check reinjection and avoids kfree of a stack variable as reported by sashiko. There might be still machine checks that
Détails techniques
- Publiée le
- 2026-09-16
- Dernière modification
- 2026-09-16
Questions fréquentes
Qu’est-ce que CVE-2026-89920 ?
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in forwarding such machine checks into the guest. This also simplifies the machine check reinjection and avoids kfree of a stack variable as reported by sashiko. There might be still machine checks that
CVE-2026-89920 est-elle activement exploitée ?
Aucune exploitation active de CVE-2026-89920 n’est confirmée. Son score EPSS était de 0.2 % au 2026-09-28, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2026-89920 ?
CVE-2026-89920 a un score de base CVSS v3 de 7.8 (gravité HIGH).
CVE-2026-89920 touche-t-elle votre environnement ?
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