KVM: arm64: Don't retire aborted MMIO instruction

{
  "id": "bc85ad9075a0db4ba7ff2405963cfdf07be8f39ea704d7d285f1ef9afa0eac1d",
  "url": "https://osv.dev/vulnerability/CVE-2024-53196",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "KVM: arm64: Don't retire aborted MMIO instruction",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Don't retire aborted MMIO instruction Returning an abort to the guest for an unsupported MMIO access is a documented feature of the KVM UAPI. Nevertheless, it's clear that this plumbing has seen limited testing, since userspace can trivially cause a WARN in the MMIO return: WARNING: CPU: 0 PID: 30558 at arch/arm64/include/asm/kvm_emulate.h:536 kvm_handle_mmio_return+0x46c/0x5c4 arch/arm64/include/asm/kvm_emulate.h:536 Call trace: kvm_handle_mmio_return+0x46c/0x5c4 arch/arm64/include/asm/kvm_emulate.h:536 kvm_arch_vcpu_ioctl_run+0x98/0x15b4 arch/arm64/kvm/arm.c:1133 kvm_vcpu_ioctl+0x75c/0xa78 virt/kvm/kvm_main.c:4487 __do_sys_ioctl fs/ioctl.c:51 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x38/0x68 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x90/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 The splat is complaining that KVM is advancing PC while an exception is pending, i.e. that KVM is retiring the MMIO instruction despite a pending synchronous external abort. Womp womp. Fix the glaring UAPI bug by skipping over all the MMIO emulation in case there is a p",
    "evidence": "osv:CVE-2024-53196",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.66",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.11",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-53196",
      "aliases": [
        "CVE-2024-53196"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "da345174ceca052469e4775e4ae263b5f27a9355"
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                {
                  "fixed": "6af853cf5f897d55f42e9166f4db50e84e404fb3"
                },
                {
                  "fixed": "ea6b5d98fea4ee8cb443ea98fda520909e90d30e"
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                {
                  "fixed": "1e46460efe1ef9a31748de7675ff8fe0d8601af2"
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                {
                  "fixed": "d0571c3add987bcb69c2ffd7a70c998bf8ce60fb"
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                  "fixed": "e735a5da64420a86be370b216c269b5dd8e830e2"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53196.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "6.1.120"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.66"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.11.11"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.12.0"
                },
                {
                  "fixed": "6.12.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53196.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.492499674Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1e46460efe1ef9a31748de7675ff8fe0d8601af2",
        "https://git.kernel.org/stable/c/6af853cf5f897d55f42e9166f4db50e84e404fb3",
        "https://git.kernel.org/stable/c/d0571c3add987bcb69c2ffd7a70c998bf8ce60fb",
        "https://git.kernel.org/stable/c/e735a5da64420a86be370b216c269b5dd8e830e2",
        "https://git.kernel.org/stable/c/ea6b5d98fea4ee8cb443ea98fda520909e90d30e",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53196.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-53196",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53196.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-53196",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493624,
  "published_at": "2024-12-27T13:49:38.501+00:00"
}