CVE-2026-53277 (GCVE-0-2026-53277)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:40 – Updated: 2026-06-25 08:40
VLAI
Title
KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: be04cebf3e78874627dc1042991d5d504464a5cc , < 97706097f9b851cfe55c3b00b083dfc2bcf542bc (git)
Affected: be04cebf3e78874627dc1042991d5d504464a5cc , < ec42b4ed1b072ea2d03f086061aa67bad6d8de39 (git)
Affected: be04cebf3e78874627dc1042991d5d504464a5cc , < f2ca45b50d4216c9cc7ffabf50d9ad1932209251 (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "arch/arm64/kvm/at.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation\n\nwalk_s1() and kvm_walk_nested_s2() expect to be called while holding\nkvm-\u003esrcu to guard against memslot changes. While this is generally\nthe case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the\nrespective walkers without taking kvm-\u003esrcu.\n\nFix by acquiring kvm-\u003esrcu prior to the table walk in both instances."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:40:00.458Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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      ],
      "title": "KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation",
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    "datePublished": "2026-06-25T08:40:00.458Z",
    "dateReserved": "2026-06-09T07:44:35.395Z",
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    "state": "PUBLISHED"
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