172 lines
8.3 KiB
JSON
172 lines
8.3 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-46792",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-09-11T15:12:18.279Z",
|
|
"datePublished": "2024-09-18T07:12:47.455Z",
|
|
"dateUpdated": "2026-08-05T11:38:35.301Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:38:35.301Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: misaligned: Restrict user access to kernel memory\n\nraw_copy_{to,from}_user() do not call access_ok(), so this code allowed\nuserspace to access any virtual memory address."
|
|
}
|
|
],
|
|
"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 executing an instruction on the target machine, i.e. any local unprivileged process on a RISC-V system; there is no remote or adjacent-network reachability.\nAC:L - The attacker fully controls both the target address (regs->badaddr) and the stored data (rs2), the emulation path is enabled in the default RISC-V config, and faults are swallowed by the extable — so the read/write is deterministic and repeatable with no race or memory-layout dependency.\nPR:L - Any unprivileged local user can trigger it by executing a single misaligned load/store; no capabilities, namespaces, or syscalls are needed at all.\nUI:N - The attacking process triggers the trap entirely on its own; no victim action is involved.\nS:U - Impact is confined to the kernel's own security authority — this is standard local kernel compromise/privilege escalation, not a hypervisor or IOMMU boundary crossing.\nC:H - handle_misaligned_load() copies 8 bytes from any attacker-chosen kernel address straight into a user register, giving a repeatable arbitrary kernel-memory read over the entire address space including the direct map.\nI:H - handle_misaligned_store() writes 8 bytes of attacker-controlled data to any kernel address, an arbitrary kernel write primitive that yields credential overwrite and kernel code execution.\nA:H - The same arbitrary write lets an attacker corrupt critical kernel structures or text at will, causing immediate panic or permanent system compromise."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"arch/riscv/kernel/traps_misaligned.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "7c83232161f609bbc452a1255f823f41afc411dd",
|
|
"lessThan": "a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "7c83232161f609bbc452a1255f823f41afc411dd",
|
|
"lessThan": "b686ecdeacf6658e1348c1a32a08e2e72f7c0f00",
|
|
"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/riscv/kernel/traps_misaligned.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.7",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.7",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10.10",
|
|
"lessThanOrEqual": "6.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.11",
|
|
"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": "6.7",
|
|
"versionEndExcluding": "6.10.10"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.7",
|
|
"versionEndExcluding": "6.11"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b686ecdeacf6658e1348c1a32a08e2e72f7c0f00"
|
|
}
|
|
],
|
|
"title": "riscv: misaligned: Restrict user access to kernel memory",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2024-09-29T14:23:34.926999Z",
|
|
"id": "CVE-2024-46792",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-09-29T14:23:47.441Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |