248 lines
13 KiB
JSON
248 lines
13 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-47727",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-09-30T16:00:12.957Z",
|
|
"datePublished": "2024-10-21T12:14:00.330Z",
|
|
"dateUpdated": "2026-08-05T11:39:46.427Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:39:46.427Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/tdx: Fix \"in-kernel MMIO\" check\n\nTDX only supports kernel-initiated MMIO operations. The handle_mmio()\nfunction checks if the #VE exception occurred in the kernel and rejects\nthe operation if it did not.\n\nHowever, userspace can deceive the kernel into performing MMIO on its\nbehalf. For example, if userspace can point a syscall to an MMIO address,\nsyscall does get_user() or put_user() on it, triggering MMIO #VE. The\nkernel will treat the #VE as in-kernel MMIO.\n\nEnsure that the target MMIO address is within the kernel before decoding\ninstruction."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - Exploitation requires a local process inside the TDX guest to issue syscalls with a pointer into an MMIO/host-visible mapping; there is no network-reachable path to the #VE handler.\nAC:L - The attacker fully controls both the mapping and the syscall pointer, and get_user()/put_user() emit exactly the mov encodings that insn_decode_mmio() accepts, so the MMIO hypercall is triggered deterministically with no race or unpredictable state.\nPR:L - An ordinary unprivileged guest account suffices — any mapping of a device BAR or of DMA-coherent (decrypted/shared) memory exposed by a driver mmap works, and the untrusted VMM can force EPT-violation #VEs on shared pages at will.\nUI:N - The attacking process performs the mmap and the syscall itself; no other user or victim action is involved.\nS:U - The boundary bypassed is guest-userspace to guest-kernel within the same OS authority; this is not a guest-to-host escape or an IOMMU/DMA boundary bypass.\nC:H - Userspace obtains an unauthorized MMIO read primitive against device registers and forces kernel-context data out through TDVMCALL to the untrusted VMM, defeating the TD confidentiality guarantee; it is also the reachable path to the uninitialized-stack leak in mmio_read().\nI:H - The bug yields an unprivileged MMIO write primitive to device/hypervisor-visible registers (doorbells, DMA and control registers), and VMM-supplied read data is written directly into the kernel's pt_regs and acted upon mid-syscall.\nA:H - Unauthorized MMIO writes can misprogram or wedge virtual devices, and the userspace-reachable WARN_ON_ONCE()/-EIO paths reach ve_raise_fault() and die_addr(), producing an oops or a full panic under panic_on_warn."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"arch/x86/coco/tdx/tdx.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
|
|
"lessThan": "25703a3c980e21548774eea8c8a87a75c5c8f58c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
|
|
"lessThan": "4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
|
|
"lessThan": "18ecd5b74682839e7cdafb7cd1ec106df7baa18c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
|
|
"lessThan": "bca2e29f7e26ce7c3522f8b324c0bd85612f68e3",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
|
|
"lessThan": "d4fc4d01471528da8a9797a065982e05090e1d81",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"arch/x86/coco/tdx/tdx.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "5.19",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "5.19",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.113",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.54",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10.13",
|
|
"lessThanOrEqual": "6.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.11.2",
|
|
"lessThanOrEqual": "6.11.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.19",
|
|
"versionEndExcluding": "6.1.113"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.19",
|
|
"versionEndExcluding": "6.6.54"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.19",
|
|
"versionEndExcluding": "6.10.13"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.19",
|
|
"versionEndExcluding": "6.11.2"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.19",
|
|
"versionEndExcluding": "6.12"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/25703a3c980e21548774eea8c8a87a75c5c8f58c"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/18ecd5b74682839e7cdafb7cd1ec106df7baa18c"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bca2e29f7e26ce7c3522f8b324c0bd85612f68e3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d4fc4d01471528da8a9797a065982e05090e1d81"
|
|
}
|
|
],
|
|
"title": "x86/tdx: Fix \"in-kernel MMIO\" check",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2024-47727",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2024-10-21T13:01:01.673306Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-10-21T13:04:16.452Z"
|
|
}
|
|
},
|
|
{
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2025-11-03T22:21:23.601Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |