CVE-2026-89911KVM: arm64: Correctly cap TLBI Range to the architural limit
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the range to the base... Make sure the range is capped to the limit dictated by the address bit that determines the VA range. For an IPA invalidation, this is further corrected down the line to ignore the upper range.
- CVSS
- 7.9 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 before 566b1f08d983615f731cc693f2ad59db302c6b57; 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 builds before 2de38f0448b45d27eba984fc0d9edb7a138972c2; from 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 before 69a598288195947a1662b53de702eb6976af96b7 | CNA record |
References
- https://git.kernel.org/stable/c/566b1f08d983615f731cc693f2ad59db302c6b57
- https://git.kernel.org/stable/c/2de38f0448b45d27eba984fc0d9edb7a138972c2
- https://git.kernel.org/stable/c/69a598288195947a1662b53de702eb6976af96b7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.