01 Record
CVE-2026-89775
KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CriticalPUBLISHEDCNA: Linux
CNA base score9.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
02 Description
KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.23% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 14.4% of scored records. A rank, not a probability.
- NVD base score
- 9.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Received. NVD last modified this record on 2026-10-19.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-16 08:39Z1 MO AGO
- Last updated
- 2026-10-19 08:52Z10 DAYS AGO
- Reserved
- 2026-09-11
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.3)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-190Integer Overflow or WraparoundBase
- Data version
- 5.2
- Document digest
- 0243b413f436e6d158db73fe6491e95e361a80f253ceb29131c9a3b9ad95db37
05 Affected products
VendorProductVersionsPlatforms
LinuxLinux7270cc9157f474dfc46750a34c9d7defc686b2eb to < be54a70067c7dbe1381157e8a238fa4b16ea9c05, 7270cc9157f474dfc46750a34c9d7defc686b2eb to < 1c9fca34b9625a67a7f1a03c8604f3df760c6c49, 7270cc9157f474dfc46750a34c9d7defc686b2eb to < 8053393680d4fa3eb962667d2be95dd39f0940e5, 6.16—
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/be54a70067c7dbe1381157e8a238fa4b16ea9c05
- git.kernel.orghttps://git.kernel.org/stable/c/1c9fca34b9625a67a7f1a03c8604f3df760c6c49
- git.kernel.orghttps://git.kernel.org/stable/c/8053393680d4fa3eb962667d2be95dd39f0940e5
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/09/16/14
07 Fixed in
AlmaLinux 10
- kernel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.61.1.el10_2
- kernel-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.61.1.el10_2
- kernel-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-doc Fixed in 6.12.0-211.61.1.el10_2
- kernel-headers Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.61.1.el10_2
35 further packages in AlmaLinux 10 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 10
- kernel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.61.1.el10_2
- kernel-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.61.1.el10_2
- kernel-devel Fixed in 6.12.0-211.61.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-doc Fixed in 6.12.0-211.61.1.el10_2
- kernel-headers Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.61.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.61.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.61.1.el10_2
35 further packages in CloudLinux 10 not shown (first 40 listed).
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 7.2.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-hwe-edge No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-azure No fix yet
- linux-azure-5.3 No fix yet
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-5.3 No fix yet
- linux-gke-4.15 No fix yet
- linux-gke-5.4 No fix yet
- linux-gkeop-5.4 No fix yet
- linux-hwe No fix yet
- linux-hwe-edge No fix yet
- linux-oem No fix yet
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop No fix yet
- linux-gkeop-5.15 No fix yet
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.8 No fix yet
- linux-intel-5.13 No fix yet
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 No fix yet
- linux-oem-5.6 No fix yet
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.8 No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
- linux-riscv-5.11 No fix yet
- linux-riscv-5.8 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-allwinner-5.19 No fix yet
- linux-aws-5.19 No fix yet
- linux-aws-6.2 No fix yet
- linux-aws-6.5 No fix yet
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 No fix yet
- linux-gcp-6.5 No fix yet
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- linux-intel-iot-realtime No fix yet
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 No fix yet
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 No fix yet
- linux-oem-6.5 No fix yet
- linux-oracle-6.5 No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-5.19 No fix yet
- linux-riscv-6.5 No fix yet
- linux-starfive-5.19 No fix yet
- linux-starfive-6.2 No fix yet
- linux-starfive-6.5 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-aws-6.14 No fix yet
- linux-aws-6.17 No fix yet
- linux-aws-7.0 No fix yet
- linux-azure-6.11 No fix yet
- linux-azure-6.14 No fix yet
- linux-azure-6.17 No fix yet
- linux-azure-7.0 No fix yet
- linux-azure-fde-6.14 No fix yet
- linux-azure-fde-6.17 No fix yet
- linux-azure-fde-7.0 No fix yet
- linux-azure-nvidia-6.14 No fix yet
- linux-gcp-6.11 No fix yet
- linux-gcp-6.14 No fix yet
- linux-gcp-6.17 No fix yet
- linux-gcp-7.0 No fix yet
- linux-hwe-6.11 No fix yet
- linux-hwe-6.14 No fix yet
- linux-hwe-6.17 No fix yet
- linux-hwe-7.0 No fix yet
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia-6.11 No fix yet
- linux-nvidia-6.17 No fix yet
- linux-nvidia-7.0 No fix yet
- linux-oem-6.11 No fix yet
- linux-oem-6.14 No fix yet
- linux-oem-6.17 No fix yet
- linux-oem-6.8 No fix yet
- linux-oracle-6.14 No fix yet
- linux-oracle-6.17 No fix yet
- linux-oracle-7.0 No fix yet
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-6.14 No fix yet
- linux-riscv-6.17 No fix yet
- linux-riscv-7.0 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- linux No fix yet
- linux-aws No fix yet
- linux-azure No fix yet
- linux-azure-fde No fix yet
- linux-gcp No fix yet
- linux-gke No fix yet
- linux-ibm No fix yet
- linux-nvidia No fix yet
- linux-nvidia-bos No fix yet
- linux-oem-7.0 No fix yet
- linux-oracle No fix yet
- linux-raspi No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 24.04 LTS
- linux-realtime-6.14 No fix yet
- linux-realtime-6.17 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.