Vulnerability · Published Jun 25, 2026 · Assigned by Linux
CVE-2026-53277KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation
High 8.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.1%top 98.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walk_s1() and kvm_walk_nested_s2() expect to be called while holding kvm->srcu to guard against memslot changes. While this is generally the case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the respective walkers without taking kvm->srcu. Fix by acquiring kvm->srcu prior to the table walk in both instances.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | linux | 6.12.115-2 | DEBIAN-CVE-2026-53277 |
| Debian:14 | linux | 7.0.13-1 | DEBIAN-CVE-2026-53277 |
| Rocky Linux:10 | kernel | 0:6.12.0-211.52.1.el10_2 | RLSA-2026:64775 |
| Ubuntu:25.10 | linux | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux | 7.0.0-28.28 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-aws | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1009.9 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-azure | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-azure | 7.0.0-1010.10 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | 6.17.0-1021.21~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-7.0 | 7.0.0-1014.14~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-azure-fde | 7.0.0-1009.9 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-fde-7.0 | 7.0.0-1013.13~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-gcp | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1008.8 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | 6.17.0-1021.24~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-gcp-7.0 | 7.0.0-1011.11~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-gke | 7.0.0-1003.4 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-hwe-6.17 | 6.17.0-41.41~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-hwe-7.0 | 7.0.0-28.28~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1010.10 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-nvidia | 7.0.0-1016.16 | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | 6.17.0-1031.31 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-nvidia-7.0 | 7.0.0-1016.16~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-nvidia-bos | 7.0.0-2016.16 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | 6.17.0-1030.30 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-oem-7.0 | 7.0.0-1009.9 | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-oracle | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1008.8 | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | 6.17.0-1019.19~24.04.3 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-oracle-7.0 | 7.0.0-1011.11~24.04.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-raspi | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-raspi | 7.0.0-1015.15 | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-realtime | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-realtime | 7.0.0-28.28.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:25.10 | linux-riscv | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:26.04:LTS | linux-riscv | 7.0.0-28.28.1 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-riscv-6.17 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:24.04:LTS | linux-riscv-7.0 | 7.0.0-28.28.1~24.04.3 | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2026-53277 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2026-53277 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | be04cebf3e78874627dc1042991d5d504464a5cc – before 0648b375aa951cc15d9e90f9ac4de71e0b51fa45be04cebf3e78874627dc1042991d5d504464a5cc – before 97706097f9b851cfe55c3b00b083dfc2bcf542bcbe04cebf3e78874627dc1042991d5d504464a5cc – before ec42b4ed1b072ea2d03f086061aa67bad6d8de39be04cebf3e78874627dc1042991d5d504464a5cc – before f2ca45b50d4216c9cc7ffabf50d9ad1932209251 |
| Linux | Linux | 6.12 |
Weakness: CWE-820 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- https://git.kernel.org/stable/c/0648b375aa951cc15d9e90f9ac4de71e0b51fa45
- https://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc
- https://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39
- https://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251
- https://access.redhat.com/security/cve/CVE-2026-53277 vdb-entry, x_refsource_REDHAT
- RHBZ#2492725 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53277.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:64775 vendor-advisory, x_refsource_REDHAT