CVE-2024-56662 (GCVE-0-2024-56662)
Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2026-08-05 11:45
VLAI
EPSS
VEX
Title
acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl
Summary
In the Linux kernel, the following vulnerability has been resolved:
acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl
Fix an issue detected by syzbot with KASAN:
BUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/
core.c:416 [inline]
BUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0
drivers/acpi/nfit/core.c:459
The issue occurs in cmd_to_func when the call_pkg->nd_reserved2
array is accessed without verifying that call_pkg points to a buffer
that is appropriately sized as a struct nd_cmd_pkg. This can lead
to out-of-bounds access and undefined behavior if the buffer does not
have sufficient space.
To address this, a check was added in acpi_nfit_ctl() to ensure that
buf is not NULL and that buf_len is less than sizeof(*call_pkg)
before accessing it. This ensures safe access to the members of
call_pkg, including the nd_reserved2 array.
Severity
7.8 (High)
6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:59 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < 616aa5f3c86e0479bcbb81e41c08c43ff32af637
(git)
Affected: ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < bbdb3307f609ec4dc9558770f464ede01fe52aed (git) Affected: ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < 143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0 (git) Affected: ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d (git) Affected: ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < 212846fafb753a48e869e2a342fc1e24048da771 (git) Affected: ebe9f6f19d80d8978d16078dff3d5bd93ad8d102 , < 265e98f72bac6c41a4492d3e30a8e5fd22fe0779 (git) Affected: 63108f2a408abea7ecab063efa0f398da4d0d14b (git) Affected: f5878c4f084dc6b1386dad03970bb61ad5e9dc4b (git) Affected: 0c79794474895dbbc3c52225f7e9f73cfecbb7dd (git) Affected: 4.14.176 , < 4.15 (semver) Affected: 4.19.31 , < 4.20 (semver) Affected: 5.0.4 , < 5.1 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.1
Unaffected: 0 , < 5.1 (semver) Unaffected: 5.10.232 , ≤ 5.10.* (semver) Unaffected: 5.15.175 , ≤ 5.15.* (semver) Unaffected: 6.1.121 , ≤ 6.1.* (semver) Unaffected: 6.6.67 , ≤ 6.6.* (semver) Unaffected: 6.12.6 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-56662",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:59:57.981489Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125 Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T20:07:10.083Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2025-11-03T20:52:10.200Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/acpi/nfit/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "616aa5f3c86e0479bcbb81e41c08c43ff32af637",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"lessThan": "bbdb3307f609ec4dc9558770f464ede01fe52aed",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"lessThan": "143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"lessThan": "e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"lessThan": "212846fafb753a48e869e2a342fc1e24048da771",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"lessThan": "265e98f72bac6c41a4492d3e30a8e5fd22fe0779",
"status": "affected",
"version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
"versionType": "git"
},
{
"status": "affected",
"version": "63108f2a408abea7ecab063efa0f398da4d0d14b",
"versionType": "git"
},
{
"status": "affected",
"version": "f5878c4f084dc6b1386dad03970bb61ad5e9dc4b",
"versionType": "git"
},
{
"status": "affected",
"version": "0c79794474895dbbc3c52225f7e9f73cfecbb7dd",
"versionType": "git"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.176",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.31",
"versionType": "semver"
},
{
"lessThan": "5.1",
"status": "affected",
"version": "5.0.4",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/acpi/nfit/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.1"
},
{
"lessThan": "5.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.232",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.175",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.121",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.67",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.232",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.175",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.121",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.67",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.6",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.14.176",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.0.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nacpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl\n\nFix an issue detected by syzbot with KASAN:\n\nBUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/\ncore.c:416 [inline]\nBUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0\ndrivers/acpi/nfit/core.c:459\n\nThe issue occurs in cmd_to_func when the call_pkg-\u003end_reserved2\narray is accessed without verifying that call_pkg points to a buffer\nthat is appropriately sized as a struct nd_cmd_pkg. This can lead\nto out-of-bounds access and undefined behavior if the buffer does not\nhave sufficient space.\n\nTo address this, a check was added in acpi_nfit_ctl() to ensure that\nbuf is not NULL and that buf_len is less than sizeof(*call_pkg)\nbefore accessing it. This ensures safe access to the members of\ncall_pkg, including the nd_reserved2 array."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached exclusively through the `ND_IOCTL_CALL` ioctl on the local libnvdimm character devices `/dev/ndctl%d` or `/dev/nmem%d`, requiring local system access. There is no remote or adjacent-network path into `acpi_nfit_ctl()`.\nAC:L - The attacker fully controls `nd_size_in`/`nd_size_out` in the ioctl payload, and the u32 overflow in `__nd_ioctl()` deterministically produces an undersized `vmalloc()` buffer on every attempt; the OOB read in `cmd_to_func()` occurs unconditionally before any command-mask validation. No race, timing window, or uninfluenceable memory layout is involved.\nPR:L - The entire path from `nd_ioctl()` through `acpi_nfit_ctl()` contains no `capable()` or capability check of any kind \u2014 access is gated only by filesystem permissions on the nvdimm device node plus the `O_RDONLY` rejection, so any account or container granted write access to `/dev/ndctl0`/`/dev/nmem0` (e.g. a delegated pmem-management group or a management container given the device) can trigger it. Since no in-kernel privilege gate exists, this is scored as low privileges rather than real root.\nUI:N - Exploitation is a single self-contained ioctl issued by the attacker\u0027s own process; no victim action, mount, or file open is required.\nS:U - The out-of-bounds access corrupts and discloses kernel memory within the same kernel security authority, and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - The undersized allocation causes reads of up to 40 bytes of stale kernel page data past the allocation (`nd_reserved2` and `nd_fw_size`), and the desynchronized `nd_size_in` is then passed to `acpi_evaluate_dsm()` as a buffer descriptor of attacker-chosen length (up to ~4 GB) pointing into the vmap area, exposing far more than a strictly bounded few bytes.\nI:H - The same undersized-buffer condition yields an out-of-bounds write: `call_pkg-\u003end_fw_size = out_obj-\u003ebuffer.length` writes 4 bytes past the allocation, and `memcpy(call_pkg-\u003end_payload + call_pkg-\u003end_size_in, ...)` writes DSM output to an attacker-controlled offset roughly 4 GB beyond `buf`. An out-of-bounds write with attacker-influenced destination and length is a control-flow-hijack-capable primitive.\nA:H - The OOB access triggers a KASAN BUG on hardened kernels, and on production kernels the ~4 GB buffer length handed to the ACPI interpreter and the wild `memcpy` destination in the vmap region reliably fault, producing a kernel oops or panic. The condition is trivially repeatable."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:45:56.280Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/616aa5f3c86e0479bcbb81e41c08c43ff32af637"
},
{
"url": "https://git.kernel.org/stable/c/bbdb3307f609ec4dc9558770f464ede01fe52aed"
},
{
"url": "https://git.kernel.org/stable/c/143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0"
},
{
"url": "https://git.kernel.org/stable/c/e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d"
},
{
"url": "https://git.kernel.org/stable/c/212846fafb753a48e869e2a342fc1e24048da771"
},
{
"url": "https://git.kernel.org/stable/c/265e98f72bac6c41a4492d3e30a8e5fd22fe0779"
}
],
"title": "acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-56662",
"datePublished": "2024-12-27T15:06:24.661Z",
"dateReserved": "2024-12-27T15:00:39.843Z",
"dateUpdated": "2026-08-05T11:45:56.280Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-56662",
"date": "2026-09-16",
"epss": "0.0061",
"percentile": "0.47589"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-56662\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:26.073\",\"lastModified\":\"2026-08-04T11:22:19.407\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nacpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl\\n\\nFix an issue detected by syzbot with KASAN:\\n\\nBUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/\\ncore.c:416 [inline]\\nBUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0\\ndrivers/acpi/nfit/core.c:459\\n\\nThe issue occurs in cmd_to_func when the call_pkg-\u003end_reserved2\\narray is accessed without verifying that call_pkg points to a buffer\\nthat is appropriately sized as a struct nd_cmd_pkg. This can lead\\nto out-of-bounds access and undefined behavior if the buffer does not\\nhave sufficient space.\\n\\nTo address this, a check was added in acpi_nfit_ctl() to ensure that\\nbuf is not NULL and that buf_len is less than sizeof(*call_pkg)\\nbefore accessing it. This ensures safe access to the members of\\ncall_pkg, including the nd_reserved2 array.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: acpi: nfit: vmalloc-out-of-bounds Lectura en acpi_nfit_ctl Se soluciona un problema detectado por syzbot con KASAN: ERROR: KASAN: vmalloc-out-of-bounds en cmd_to_func drivers/acpi/nfit/ core.c:416 [en l\u00ednea] ERROR: KASAN: vmalloc-out-of-bounds en acpi_nfit_ctl+0x20e8/0x24a0 drivers/acpi/nfit/core.c:459 El problema ocurre en cmd_to_func cuando se accede a la matriz call_pkg-\u0026gt;nd_reserved2 sin verificar que call_pkg apunte a un b\u00fafer que tenga el tama\u00f1o adecuado como una estructura nd_cmd_pkg. Esto puede provocar un acceso fuera de los l\u00edmites y un comportamiento indefinido si el b\u00fafer no tiene suficiente espacio. Para solucionar este problema, se agreg\u00f3 una verificaci\u00f3n en acpi_nfit_ctl() para garantizar que buf no sea NULL y que buf_len sea menor que sizeof(*call_pkg) antes de acceder a \u00e9l. Esto garantiza un acceso seguro a los miembros de call_pkg, incluida la matriz nd_reserved2.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/acpi/nfit/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"616aa5f3c86e0479bcbb81e41c08c43ff32af637\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"bbdb3307f609ec4dc9558770f464ede01fe52aed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"212846fafb753a48e869e2a342fc1e24048da771\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\",\"lessThan\":\"265e98f72bac6c41a4492d3e30a8e5fd22fe0779\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"63108f2a408abea7ecab063efa0f398da4d0d14b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f5878c4f084dc6b1386dad03970bb61ad5e9dc4b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c79794474895dbbc3c52225f7e9f73cfecbb7dd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.14.176\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.31\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.0.4\",\"lessThan\":\"5.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/acpi/nfit/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.232\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.175\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.121\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.67\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.6\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":6.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":5.2},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":6.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":5.2}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:59:57.981489Z\",\"id\":\"CVE-2024-56662\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.176\",\"versionEndExcluding\":\"4.15\",\"matchCriteriaId\":\"B6274D15-ED31-472F-B0FC-C76687469C95\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.31\",\"versionEndExcluding\":\"4.20\",\"matchCriteriaId\":\"C208F54A-1F85-44EF-9E91-6DA461A49CA0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0.4\",\"versionEndExcluding\":\"5.10.232\",\"matchCriteriaId\":\"3B31FA24-D2AC-48A5-A29D-35820E219F8E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.175\",\"matchCriteriaId\":\"7A1F3620-6900-4852-9229-C3527377EBDA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.121\",\"matchCriteriaId\":\"D8DA16A0-9C6E-493E-90EE-309A34901477\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.67\",\"matchCriteriaId\":\"BF4F2CD1-2CA6-4D6B-9B0C-57C3C4D6544A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.6\",\"matchCriteriaId\":\"0CB1A9BB-F95E-43DD-A2FD-147912FD91E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/212846fafb753a48e869e2a342fc1e24048da771\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/265e98f72bac6c41a4492d3e30a8e5fd22fe0779\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/616aa5f3c86e0479bcbb81e41c08c43ff32af637\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bbdb3307f609ec4dc9558770f464ede01fe52aed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T14:07:43+00:00",
"cve": "CVE-2024-56662",
"id": "CVE-2024-56662",
"initial_release_date": "2024-12-27T00:00:00+00:00",
"product_status:fixed": "612",
"product_status:known_affected": "50",
"product_status:known_not_affected": "62",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56662.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:52:10.200Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.0, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56662\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:59:57.981489Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:45:19.658Z\"}}], \"cna\": {\"title\": \"acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerability is reached exclusively through the `ND_IOCTL_CALL` ioctl on the local libnvdimm character devices `/dev/ndctl%d` or `/dev/nmem%d`, requiring local system access. There is no remote or adjacent-network path into `acpi_nfit_ctl()`.\\nAC:L - The attacker fully controls `nd_size_in`/`nd_size_out` in the ioctl payload, and the u32 overflow in `__nd_ioctl()` deterministically produces an undersized `vmalloc()` buffer on every attempt; the OOB read in `cmd_to_func()` occurs unconditionally before any command-mask validation. No race, timing window, or uninfluenceable memory layout is involved.\\nPR:L - The entire path from `nd_ioctl()` through `acpi_nfit_ctl()` contains no `capable()` or capability check of any kind \\u2014 access is gated only by filesystem permissions on the nvdimm device node plus the `O_RDONLY` rejection, so any account or container granted write access to `/dev/ndctl0`/`/dev/nmem0` (e.g. a delegated pmem-management group or a management container given the device) can trigger it. Since no in-kernel privilege gate exists, this is scored as low privileges rather than real root.\\nUI:N - Exploitation is a single self-contained ioctl issued by the attacker\u0027s own process; no victim action, mount, or file open is required.\\nS:U - The out-of-bounds access corrupts and discloses kernel memory within the same kernel security authority, and does not cross a VM, IOMMU, or sandbox boundary.\\nC:H - The undersized allocation causes reads of up to 40 bytes of stale kernel page data past the allocation (`nd_reserved2` and `nd_fw_size`), and the desynchronized `nd_size_in` is then passed to `acpi_evaluate_dsm()` as a buffer descriptor of attacker-chosen length (up to ~4 GB) pointing into the vmap area, exposing far more than a strictly bounded few bytes.\\nI:H - The same undersized-buffer condition yields an out-of-bounds write: `call_pkg-\u003end_fw_size = out_obj-\u003ebuffer.length` writes 4 bytes past the allocation, and `memcpy(call_pkg-\u003end_payload + call_pkg-\u003end_size_in, ...)` writes DSM output to an attacker-controlled offset roughly 4 GB beyond `buf`. An out-of-bounds write with attacker-influenced destination and length is a control-flow-hijack-capable primitive.\\nA:H - The OOB access triggers a KASAN BUG on hardened kernels, and on production kernels the ~4 GB buffer length handed to the ACPI interpreter and the wild `memcpy` destination in the vmap region reliably fault, producing a kernel oops or panic. The condition is trivially repeatable.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"616aa5f3c86e0479bcbb81e41c08c43ff32af637\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"bbdb3307f609ec4dc9558770f464ede01fe52aed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"212846fafb753a48e869e2a342fc1e24048da771\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ebe9f6f19d80d8978d16078dff3d5bd93ad8d102\", \"lessThan\": \"265e98f72bac6c41a4492d3e30a8e5fd22fe0779\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"63108f2a408abea7ecab063efa0f398da4d0d14b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f5878c4f084dc6b1386dad03970bb61ad5e9dc4b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c79794474895dbbc3c52225f7e9f73cfecbb7dd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4.14.176\", \"lessThan\": \"4.15\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.19.31\", \"lessThan\": \"4.20\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.0.4\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/acpi/nfit/core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.232\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.175\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.121\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.67\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/acpi/nfit/core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/616aa5f3c86e0479bcbb81e41c08c43ff32af637\"}, {\"url\": \"https://git.kernel.org/stable/c/bbdb3307f609ec4dc9558770f464ede01fe52aed\"}, {\"url\": \"https://git.kernel.org/stable/c/143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0\"}, {\"url\": \"https://git.kernel.org/stable/c/e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d\"}, {\"url\": \"https://git.kernel.org/stable/c/212846fafb753a48e869e2a342fc1e24048da771\"}, {\"url\": \"https://git.kernel.org/stable/c/265e98f72bac6c41a4492d3e30a8e5fd22fe0779\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nacpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl\\n\\nFix an issue detected by syzbot with KASAN:\\n\\nBUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/\\ncore.c:416 [inline]\\nBUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0\\ndrivers/acpi/nfit/core.c:459\\n\\nThe issue occurs in cmd_to_func when the call_pkg-\u003end_reserved2\\narray is accessed without verifying that call_pkg points to a buffer\\nthat is appropriately sized as a struct nd_cmd_pkg. This can lead\\nto out-of-bounds access and undefined behavior if the buffer does not\\nhave sufficient space.\\n\\nTo address this, a check was added in acpi_nfit_ctl() to ensure that\\nbuf is not NULL and that buf_len is less than sizeof(*call_pkg)\\nbefore accessing it. This ensures safe access to the members of\\ncall_pkg, including the nd_reserved2 array.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.232\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.175\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.121\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.67\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.6\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.176\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.0.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:45:56.280Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-56662\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:45:56.280Z\", \"dateReserved\": \"2024-12-27T15:00:39.843Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T15:06:24.661Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Loading…
Loading…