234 lines
12 KiB
JSON
234 lines
12 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-46741",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-09-11T15:12:18.263Z",
|
|
"datePublished": "2024-09-18T07:12:02.496Z",
|
|
"dateUpdated": "2026-08-27T12:39:34.666Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-27T12:39:34.666Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix double free of 'buf' in error path\n\nsmatch warning:\ndrivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of 'buf'\n\nIn fastrpc_req_mmap() error path, the fastrpc buffer is freed in\nfastrpc_req_munmap_impl() if unmap is successful.\n\nBut in the end, there is an unconditional call to fastrpc_buf_free().\nSo the above case triggers the double free of fastrpc buf."
|
|
}
|
|
],
|
|
"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 - The vulnerable code is reached only via `ioctl(FASTRPC_IOCTL_MMAP)` on the `/dev/fastrpc-*` misc device node, requiring local access to the system. No network or remote peer input reaches this path.\nAC:L - The attacker deterministically forces the error path by passing a read-only user mapping as `argp`, so `copy_from_user()` succeeds but the final `copy_to_user()` returns `-EFAULT`, and the subsequent DSP munmap of the just-mapped buffer always succeeds — no race or uncontrolled condition is involved.\nPR:L - The fastrpc driver contains no `capable()` or `CAP_*` checks on any path to `fastrpc_req_mmap()`; any local user able to open the fastrpc device node (routinely granted to unprivileged applications on Qualcomm Android/embedded/laptop systems) can trigger it.\nUI:N - The attacking process performs the entire sequence itself with two ioctls and its own memory mapping; no action by another user or victim is required.\nS:U - The corruption is confined to the kernel's own slab and DMA/CMA allocators within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The second `fastrpc_buf_free()` reads `buf->dev/size/virt/phys` from freed slab memory, and the duplicated `dma_free_coherent()` releases pages that remain mappable to userspace via this driver's dma-buf `.mmap`, allowing an attacker-mapped page to be re-issued to another kernel consumer and read — an arbitrary kernel-memory disclosure primitive.\nI:H - A same-object double free poisons the SLUB freelist so the same chunk is handed out to two owners, yielding overlapping-object heap corruption and, together with the still-mapped doubly-freed DMA pages, an arbitrary kernel write suitable for privilege escalation.\nA:H - Even without successful exploitation the double free corrupts the slab and page allocators, and on kernels with SLUB debugging or freelist hardening it trips an immediate BUG, causing a kernel panic that any local user can trigger at will."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/misc/fastrpc.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "13327ed95222e70fa98805382b65636b872d87cb",
|
|
"lessThan": "4753cc37b6606ef9a7ec22861d380d45e2707f9a",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2",
|
|
"lessThan": "f77dc8a75859e559f3238a6d906206259227985e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2",
|
|
"lessThan": "bfc1704d909dc9911a558b1a5833d3d61a43a1f2",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2",
|
|
"lessThan": "e8c276d4dc0e19ee48385f74426aebc855b49aaf",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "911737ad0c860251f640a05feb75f9dc7e41f0d7",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "b10e064ca0f708c4b4401ac5eab0f76cf7cec93d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "5.10.267",
|
|
"lessThan": "5.11",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.218",
|
|
"lessThan": "5.16",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/misc/fastrpc.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.2",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.2",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.51",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"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": "6.2",
|
|
"versionEndExcluding": "6.6.51"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.2",
|
|
"versionEndExcluding": "6.10.10"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.2",
|
|
"versionEndExcluding": "6.11"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.10.267"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "5.15.218"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4753cc37b6606ef9a7ec22861d380d45e2707f9a"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f77dc8a75859e559f3238a6d906206259227985e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bfc1704d909dc9911a558b1a5833d3d61a43a1f2"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e8c276d4dc0e19ee48385f74426aebc855b49aaf"
|
|
}
|
|
],
|
|
"title": "misc: fastrpc: Fix double free of 'buf' in error path",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2024-09-29T14:50:16.910976Z",
|
|
"id": "CVE-2024-46741",
|
|
"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": "2024-09-29T14:50:31.769Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |