CVE-2026-89912

CVE CVE-2026-89912EUVD EUVD-2026-80512Published 2026-09-16T10:32:09.000ZLast changed 2026-09-16T14:40:03.000ZCVSS 7.1

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save MAPC with V=0 drops ite->collection but leaves the ITE on the device's ITT list, and vgic_its_save_ite() dereferences it unconditionally. A guest that issues MAPD, MAPTI and then MAPC(V=0) therefore oopses the host when the VMM issues KVM_DEV_ARM_ITS_SAVE_TABLES to migrate it. That sequence is UNPREDICTABLE per the architecture, but KVM already handles the resulting state in the translate, MOVI and DISCARD paths. Save a zeroed entry, which vgic_its_restore_ite() reads back as invalid. Skipping the ITE instead would leave the ITT slot holding whatever is in guest memory, and restore rejects an entry naming a collection the restored collection table does not have.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.2.5; 4.12; eff484e0298da5a4d18ca82f5454c557fd942af5 <c6c156d931c33b92362383cf76f6d6e1291dcbfe; eff484e0298da5a4d18ca82f5454c557fd942af5 <36df368861d2664291298feeb37dfef43fcae670; eff484e0298da5a4d18ca82f5454c557fd942af5 <3d4c26b16a04a084fe0bde08ccdd8086570f8bbe; patch: 0; patch: 7.3-rc1; patch: 6.18.51

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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