# CVE-2026-53277: kernel: In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table wal...

CVE-2026-53277 is fixed in 63 products on 1 platform, first by ALAS2023-2026-1881, released June 22, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-53277
- Priority: High
- CVSS: 8.8 (important)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 22, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool6.18 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | bpftool6.18-debuginfo amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel RHEL 10 | 6.12.0-211.52.1.el10_2 | [RHSA-2026:64775](https://patchblox.com/security/data/fix/linux/rhsa-2026-64775.md) | Aug 6, 2026 |
| Linux | kernel ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel rocky 10 | 0:6.12.0-211.52.1.el10_2 | [RLSA-2026:64775](https://patchblox.com/security/data/fix/linux/rlsa-2026-64775.md) | Sep 9, 2026 |
| Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-64kb sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-abi-stablelists ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-azure opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-azure sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-core ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-cross-headers ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-core ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-devel ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-devel-matched ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-modules ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-modules-core ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-modules-extra ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-debug-uki-virt ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-default sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23237-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23237-1.md) | Aug 11, 2026 |
| Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.37.1.160000.2.19 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-default-base sles 16.0 | 6.12.0-160000.37.1.160000.2.19 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-devel ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-devel-matched ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-doc ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-docs sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-headers ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-livepatch-6.18.35-68.127 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel-modules ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-modules-core ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-modules-extra ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-modules-extra-matched ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-source sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-syms sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel-tools ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-tools-libs ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-tools-libs-devel ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-uki-virt ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-uki-virt-addons ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.37.1 | [OPENSUSE-SU-2026:21555-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21555-1.md) | Aug 12, 2026 |
| Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.37.1 | [SUSE-SU-2026:23231-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23231-1.md) | Aug 11, 2026 |
| Linux | kernel6.18 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-debuginfo amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-debuginfo-common-aarch64 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-debuginfo-common-x86_64 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-devel amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-headers amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-modules-extra amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-modules-extra-common amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-tools amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-tools-debuginfo amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | kernel6.18-tools-devel amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | libperf ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-53277](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53277.md) | Jun 28, 2026 |
| Linux | linux Debian 14 | 7.0.13-1 | [DEBIAN-CVE-2026-53277](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53277.md) | Jun 28, 2026 |
| Linux | microvm-kernel6.18 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | perf ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | perf6.18 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | perf6.18-debuginfo amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | python3-perf ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | python3-perf6.18 amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | python3-perf6.18-debuginfo amzn 2023 | 1:6.18.35-68.127.amzn2023 | [ALAS2023-2026-1881](https://patchblox.com/security/data/fix/linux/alas2023-2026-1881.md) | Jun 22, 2026 |
| Linux | rtla ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |
| Linux | rv ol 10 | 0:6.12.0-211.53.1.el10_2 | [ELSA-2026-64775-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64775-0.md) | Sep 10, 2026 |

---

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