CVE-2026-89912KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save
- 7.1HighCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 44 days later
· 44 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < df829e4fe235b3a0dbf830986d81c040d3d2e940
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < 0fb71211146e39cf67811ccb873d2770a9c129ac
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < 566d0f99aec92280ce403f22068eb07241a79e2a
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < dd0c3e6c03e3bb3fd7c0fa422230020674c5c25e
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < 2c3a87ad3d3935c43d465cd2465db9020f9e898f
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < 3d4c26b16a04a084fe0bde08ccdd8086570f8bbe
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < 36df368861d2664291298feeb37dfef43fcae670
- affected eff484e0298da5a4d18ca82f5454c557fd942af5 – < c6c156d931c33b92362383cf76f6d6e1291dcbfe
- affected 4.12
- unaffected < 4.12
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/df829e4fe235b3a0dbf830986d81c040d3d2e940 (opens in a new tab)
- https://git.kernel.org/stable/c/0fb71211146e39cf67811ccb873d2770a9c129ac (opens in a new tab)
- https://git.kernel.org/stable/c/566d0f99aec92280ce403f22068eb07241a79e2a (opens in a new tab)
- https://git.kernel.org/stable/c/dd0c3e6c03e3bb3fd7c0fa422230020674c5c25e (opens in a new tab)
- https://git.kernel.org/stable/c/2c3a87ad3d3935c43d465cd2465db9020f9e898f (opens in a new tab)
- https://git.kernel.org/stable/c/3d4c26b16a04a084fe0bde08ccdd8086570f8bbe (opens in a new tab)
- https://git.kernel.org/stable/c/36df368861d2664291298feeb37dfef43fcae670 (opens in a new tab)
- https://git.kernel.org/stable/c/c6c156d931c33b92362383cf76f6d6e1291dcbfe (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80512 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89912)Record last updated .