CVE-2026-63806 (GCVE-0-2026-63806)
Vulnerability from cvelistv5
Published
2026-07-19 12:02
Modified
2026-10-19 20:07
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned() Drop a BUG_ON() that has been reachable since it was first added, way back in 2009, and instead use get_unaligned() to perform potentially-unaligned accesses. For a given store, KVM x86's emulator tracks the entire value in the destination operand, x86_emulate_ctxt.dst. If the destination is memory, and the target splits multiple pages and/or is emulated MMIO, then KVM handles each fragment independently. E.g. on a page split starting at page offset 0xffc, KVM writes 4 bytes to the first page, then the remaining bytes to the second page, using ctxt->dst as the source for both (with appropriate offsets). If the destination splits a page *and* hits emulated MMIO on the second page, then KVM will complete the write to the first page, then emulate the MMIO access to the second page. If there is a datamatch-enabled ioeventfd at offset 0 of the second page, then KVM will process the remainder of the store as a potential ioeventfd signal. Putting it all together, if the guest emits a store that splits a page starting at page offset N, and the second page has a datamatch-enabled ioeventfd at offset 0, then KVM will check for datamatch using &dst.valptr[N] as the source. Due to dst (and thus dst.valptr) being 32-byte aligned, if N is not aligned to @len, the BUG_ON() fires. E.g. with a 16-byte store at page offset 0xffc, to an ioeventfd of len 8, all initial checks in ioeventfd_in_range() will succeed, and the BUG_ON() fires due to @val being 4-byte aligned, but not 8-byte aligned. ------------[ cut here ]------------ kernel BUG at arch/x86/kvm/../../../virt/kvm/eventfd.c:783! Oops: invalid opcode: 0000 [#1] SMP CPU: 0 UID: 1000 PID: 615 Comm: repro Not tainted 7.1.0-rc2-ff238429d1ea #365 PREEMPT Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:ioeventfd_write+0x6c/0x70 [kvm] Call Trace: <TASK> __kvm_io_bus_write+0x85/0xb0 [kvm] kvm_io_bus_write+0x53/0x80 [kvm] vcpu_mmio_write+0x66/0xf0 [kvm] emulator_read_write_onepage+0x12a/0x540 [kvm] emulator_read_write+0x109/0x2b0 [kvm] x86_emulate_insn+0x4f8/0xfb0 [kvm] x86_emulate_instruction+0x181/0x790 [kvm] kvm_mmu_page_fault+0x313/0x630 [kvm] vmx_handle_exit+0x18a/0x590 [kvm_intel] kvm_arch_vcpu_ioctl_run+0xc81/0x1c90 [kvm] kvm_vcpu_ioctl+0x2d5/0x970 [kvm] __x64_sys_ioctl+0x8a/0xd0 do_syscall_64+0xb7/0x890 entry_SYSCALL_64_after_hwframe+0x4b/0x53 RIP: 0033:0x7f19c931a9bf </TASK> Modules linked in: kvm_intel kvm irqbypass ---[ end trace 0000000000000000 ]--- In a perfect world, the fix would be to simply delete the BUG_ON(), as KVM x86 doesn't perform alignment checks on "normal" memory accesses at CPL0. Sadly, C99 ruins all the fun; while the x86 architecture plays nice, dereferencing an unaligned pointer directly is undefined behavior in C, e.g. triggers splats when running with CONFIG_UBSAN_ALIGNMENT=y.
References
Impacted products
Vendor Product Version
Linux Linux Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
Version: d34e6b175e61821026893ec5298cc8e7558df43a
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()\n\nDrop a BUG_ON() that has been reachable since it was first added, way back\nin 2009, and instead use get_unaligned() to perform potentially-unaligned\naccesses.\n\nFor a given store, KVM x86\u0027s emulator tracks the entire value in the\ndestination operand, x86_emulate_ctxt.dst.  If the destination is memory,\nand the target splits multiple pages and/or is emulated MMIO, then KVM\nhandles each fragment independently.  E.g. on a page split starting at page\noffset 0xffc, KVM writes 4 bytes to the first page, then the remaining\nbytes to the second page, using ctxt-\u003edst as the source for both (with\nappropriate offsets).\n\nIf the destination splits a page *and* hits emulated MMIO on the second\npage, then KVM will complete the write to the first page, then emulate the\nMMIO access to the second page.  If there is a datamatch-enabled ioeventfd\nat offset 0 of the second page, then KVM will process the remainder of the\nstore as a potential ioeventfd signal.\n\nPutting it all together, if the guest emits a store that splits a page\nstarting at page offset N, and the second page has a datamatch-enabled\nioeventfd at offset 0, then KVM will check for datamatch using\n\u0026dst.valptr[N] as the source.  Due to dst (and thus dst.valptr) being\n32-byte aligned, if N is not aligned to @len, the BUG_ON() fires.\n\nE.g. with a 16-byte store at page offset 0xffc, to an ioeventfd of len 8,\nall initial checks in ioeventfd_in_range() will succeed, and the BUG_ON()\nfires due to @val being 4-byte aligned, but not 8-byte aligned.\n\n  ------------[ cut here ]------------\n  kernel BUG at arch/x86/kvm/../../../virt/kvm/eventfd.c:783!\n  Oops: invalid opcode: 0000 [#1] SMP\n  CPU: 0 UID: 1000 PID: 615 Comm: repro Not tainted 7.1.0-rc2-ff238429d1ea #365 PREEMPT\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n  RIP: 0010:ioeventfd_write+0x6c/0x70 [kvm]\n  Call Trace:\n   \u003cTASK\u003e\n   __kvm_io_bus_write+0x85/0xb0 [kvm]\n   kvm_io_bus_write+0x53/0x80 [kvm]\n   vcpu_mmio_write+0x66/0xf0 [kvm]\n   emulator_read_write_onepage+0x12a/0x540 [kvm]\n   emulator_read_write+0x109/0x2b0 [kvm]\n   x86_emulate_insn+0x4f8/0xfb0 [kvm]\n   x86_emulate_instruction+0x181/0x790 [kvm]\n   kvm_mmu_page_fault+0x313/0x630 [kvm]\n   vmx_handle_exit+0x18a/0x590 [kvm_intel]\n   kvm_arch_vcpu_ioctl_run+0xc81/0x1c90 [kvm]\n   kvm_vcpu_ioctl+0x2d5/0x970 [kvm]\n   __x64_sys_ioctl+0x8a/0xd0\n   do_syscall_64+0xb7/0x890\n   entry_SYSCALL_64_after_hwframe+0x4b/0x53\n  RIP: 0033:0x7f19c931a9bf\n   \u003c/TASK\u003e\n  Modules linked in: kvm_intel kvm irqbypass\n  ---[ end trace 0000000000000000 ]---\n\nIn a perfect world, the fix would be to simply delete the BUG_ON(), as KVM\nx86 doesn\u0027t perform alignment checks on \"normal\" memory accesses at CPL0.\nSadly, C99 ruins all the fun; while the x86 architecture plays nice,\ndereferencing an unaligned pointer directly is undefined behavior in C,\ne.g. triggers splats when running with CONFIG_UBSAN_ALIGNMENT=y."
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              "value": "AV:L - A malicious KVM guest triggers this via guest-executed MMIO stores handled by the x86 instruction emulator (KVM_RUN \u2192 vmx_handle_exit \u2192 kvm_mmu_page_fault \u2192 x86_emulate_instruction \u2192 emulator_read_write \u2192 vcpu_mmio_write \u2192 ioeventfd_write), not via remote network input to the host.\nAC:L - The guest fully controls the spanning store address, size, and timing; with standard QEMU/virtio datamatch ioeventfd MMIO layouts, a page-boundary write reliably reaches ioeventfd_in_range() with a misaligned val pointer and fires the BUG_ON().\nPR:N - Exploitation requires only unprivileged code execution inside an already-running guest VM (reproducer ran as UID 1000); no host capabilities, KVM ioctls, or guest root are needed beyond what any cloud VM tenant or compromised guest process already has.\nUI:N - No victim interaction is required once the attacker can run code in a KVM guest with a datamatch ioeventfd configured, which is the default virtio/QEMU setup.\nS:C - The vulnerable component is the host kernel KVM subsystem, but exploitation is initiated from a guest VM and causes a host kernel BUG/oops, crossing the hypervisor security boundary.\nC:N - The failure mode is an explicit BUG_ON() alignment check before any datamatch comparison; there is no out-of-bounds read, use-after-free, or other memory corruption that could disclose host data.\nI:N - The bug triggers a deliberate kernel BUG and does not corrupt or modify host memory; it is a crash-only denial-of-service with no integrity impact.\nA:H - A guest-triggered BUG_ON() in ioeventfd_write() causes a host kernel oops/panic, denying availability of the entire physical host and all co-resident VMs on multi-tenant KVM hypervisors."
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        "dateUpdated": "2026-08-17T04:51:12.196Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/4186c850789906b875a1d263377a4d37c078e317"
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      "title": "KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()",
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    "cveId": "CVE-2026-63806",
    "datePublished": "2026-07-19T12:02:10.209Z",
    "dateReserved": "2026-07-19T07:54:57.013Z",
    "dateUpdated": "2026-10-19T20:07:48.133Z",
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-63806\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T15:30:51.657240Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T15:30:52.222Z\"}}], \"cna\": {\"title\": \"KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - A malicious KVM guest triggers this via guest-executed MMIO stores handled by the x86 instruction emulator (KVM_RUN \\u2192 vmx_handle_exit \\u2192 kvm_mmu_page_fault \\u2192 x86_emulate_instruction \\u2192 emulator_read_write \\u2192 vcpu_mmio_write \\u2192 ioeventfd_write), not via remote network input to the host.\\nAC:L - The guest fully controls the spanning store address, size, and timing; with standard QEMU/virtio datamatch ioeventfd MMIO layouts, a page-boundary write reliably reaches ioeventfd_in_range() with a misaligned val pointer and fires the BUG_ON().\\nPR:N - Exploitation requires only unprivileged code execution inside an already-running guest VM (reproducer ran as UID 1000); no host capabilities, KVM ioctls, or guest root are needed beyond what any cloud VM tenant or compromised guest process already has.\\nUI:N - No victim interaction is required once the attacker can run code in a KVM guest with a datamatch ioeventfd configured, which is the default virtio/QEMU setup.\\nS:C - The vulnerable component is the host kernel KVM subsystem, but exploitation is initiated from a guest VM and causes a host kernel BUG/oops, crossing the hypervisor security boundary.\\nC:N - The failure mode is an explicit BUG_ON() alignment check before any datamatch comparison; there is no out-of-bounds read, use-after-free, or other memory corruption that could disclose host data.\\nI:N - The bug triggers a deliberate kernel BUG and does not corrupt or modify host memory; it is a crash-only denial-of-service with no integrity impact.\\nA:H - A guest-triggered BUG_ON() in ioeventfd_write() causes a host kernel oops/panic, denying availability of the entire physical host and all co-resident VMs on multi-tenant KVM hypervisors.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"2426c15c1395b7d5ccf1e5025ca898af7f3decb6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"4186c850789906b875a1d263377a4d37c078e317\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"36ff44fb3d89960391e013fb9d91e23dbc48be47\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"92fc631b69deb1c7d56aec2663003600799dcd75\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"bf89e3738480d33cd515b4a18900e8443d40cd2e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"5da9b1a87ec7cc3489c27016313524769f12d9e0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"5c87b47374682f69686068ad0a7779365a527b1c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d34e6b175e61821026893ec5298cc8e7558df43a\", \"lessThan\": \"f1edbed787ba67988ed34e0132ca128b052b6ce8\", \"versionType\": \"git\"}], \"programFiles\": [\"virt/kvm/eventfd.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.32\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.32\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.261\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.212\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.178\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.145\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.95\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.38\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"7.1.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"7.1.*\"}, {\"status\": \"unaffected\", \"version\": \"7.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"virt/kvm/eventfd.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/2426c15c1395b7d5ccf1e5025ca898af7f3decb6\"}, {\"url\": \"https://git.kernel.org/stable/c/4186c850789906b875a1d263377a4d37c078e317\"}, {\"url\": \"https://git.kernel.org/stable/c/36ff44fb3d89960391e013fb9d91e23dbc48be47\"}, {\"url\": \"https://git.kernel.org/stable/c/92fc631b69deb1c7d56aec2663003600799dcd75\"}, {\"url\": \"https://git.kernel.org/stable/c/bf89e3738480d33cd515b4a18900e8443d40cd2e\"}, {\"url\": \"https://git.kernel.org/stable/c/5da9b1a87ec7cc3489c27016313524769f12d9e0\"}, {\"url\": \"https://git.kernel.org/stable/c/5c87b47374682f69686068ad0a7779365a527b1c\"}, {\"url\": \"https://git.kernel.org/stable/c/f1edbed787ba67988ed34e0132ca128b052b6ce8\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nKVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()\\n\\nDrop a BUG_ON() that has been reachable since it was first added, way back\\nin 2009, and instead use get_unaligned() to perform potentially-unaligned\\naccesses.\\n\\nFor a given store, KVM x86\u0027s emulator tracks the entire value in the\\ndestination operand, x86_emulate_ctxt.dst.  If the destination is memory,\\nand the target splits multiple pages and/or is emulated MMIO, then KVM\\nhandles each fragment independently.  E.g. on a page split starting at page\\noffset 0xffc, KVM writes 4 bytes to the first page, then the remaining\\nbytes to the second page, using ctxt-\u003edst as the source for both (with\\nappropriate offsets).\\n\\nIf the destination splits a page *and* hits emulated MMIO on the second\\npage, then KVM will complete the write to the first page, then emulate the\\nMMIO access to the second page.  If there is a datamatch-enabled ioeventfd\\nat offset 0 of the second page, then KVM will process the remainder of the\\nstore as a potential ioeventfd signal.\\n\\nPutting it all together, if the guest emits a store that splits a page\\nstarting at page offset N, and the second page has a datamatch-enabled\\nioeventfd at offset 0, then KVM will check for datamatch using\\n\u0026dst.valptr[N] as the source.  Due to dst (and thus dst.valptr) being\\n32-byte aligned, if N is not aligned to @len, the BUG_ON() fires.\\n\\nE.g. with a 16-byte store at page offset 0xffc, to an ioeventfd of len 8,\\nall initial checks in ioeventfd_in_range() will succeed, and the BUG_ON()\\nfires due to @val being 4-byte aligned, but not 8-byte aligned.\\n\\n  ------------[ cut here ]------------\\n  kernel BUG at arch/x86/kvm/../../../virt/kvm/eventfd.c:783!\\n  Oops: invalid opcode: 0000 [#1] SMP\\n  CPU: 0 UID: 1000 PID: 615 Comm: repro Not tainted 7.1.0-rc2-ff238429d1ea #365 PREEMPT\\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\\n  RIP: 0010:ioeventfd_write+0x6c/0x70 [kvm]\\n  Call Trace:\\n   \u003cTASK\u003e\\n   __kvm_io_bus_write+0x85/0xb0 [kvm]\\n   kvm_io_bus_write+0x53/0x80 [kvm]\\n   vcpu_mmio_write+0x66/0xf0 [kvm]\\n   emulator_read_write_onepage+0x12a/0x540 [kvm]\\n   emulator_read_write+0x109/0x2b0 [kvm]\\n   x86_emulate_insn+0x4f8/0xfb0 [kvm]\\n   x86_emulate_instruction+0x181/0x790 [kvm]\\n   kvm_mmu_page_fault+0x313/0x630 [kvm]\\n   vmx_handle_exit+0x18a/0x590 [kvm_intel]\\n   kvm_arch_vcpu_ioctl_run+0xc81/0x1c90 [kvm]\\n   kvm_vcpu_ioctl+0x2d5/0x970 [kvm]\\n   __x64_sys_ioctl+0x8a/0xd0\\n   do_syscall_64+0xb7/0x890\\n   entry_SYSCALL_64_after_hwframe+0x4b/0x53\\n  RIP: 0033:0x7f19c931a9bf\\n   \u003c/TASK\u003e\\n  Modules linked in: kvm_intel kvm irqbypass\\n  ---[ end trace 0000000000000000 ]---\\n\\nIn a perfect world, the fix would be to simply delete the BUG_ON(), as KVM\\nx86 doesn\u0027t perform alignment checks on \\\"normal\\\" memory accesses at CPL0.\\nSadly, C99 ruins all the fun; while the x86 architecture plays nice,\\ndereferencing an unaligned pointer directly is undefined behavior in C,\\ne.g. triggers splats when running with CONFIG_UBSAN_ALIGNMENT=y.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.261\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.212\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.178\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.145\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.95\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.38\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.1.3\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.2\", \"versionStartIncluding\": \"2.6.32\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-17T04:51:12.196Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-63806\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T20:07:48.133Z\", \"dateReserved\": \"2026-07-19T07:54:57.013Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-07-19T12:02:10.209Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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