172 lines
9.0 KiB
JSON
172 lines
9.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-43816",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-08-17T09:11:59.270Z",
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"datePublished": "2024-08-17T09:21:38.926Z",
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"dateUpdated": "2026-08-05T11:36:38.470Z"
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:36:38.470Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages\n\nOn big endian architectures, it is possible to run into a memory out of\nbounds pointer dereference when FCP targets are zoned.\n\nIn lpfc_prep_embed_io, the memcpy(ptr, fcp_cmnd, sgl->sge_len) is\nreferencing a little endian formatted sgl->sge_len value. So, the memcpy\ncan cause big endian systems to crash.\n\nRedefine the *sgl ptr as a struct sli4_sge_le to make it clear that we are\nreferring to a little endian formatted data structure. And, update the\nroutine with proper le32_to_cpu macro usages."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The oversized length is produced entirely by host-side driver code and is reached by issuing SCSI commands through `lpfc_queuecommand` from local file/block I/O or an SG_IO ioctl on an FC-attached LUN. No remote peer supplies the faulty value, so local access to the system is required.\nAC:L - On an affected big-endian host with an embed-capable SLI4 HBA the byte-swapped length is used on every embedded FCP I/O, so a single ordinary read or write deterministically triggers the copy — no race to win and no memory layout the attacker cannot influence.\nPR:L - Any unprivileged local user with access to a file or device node backed by an lpfc FC LUN reaches the path through normal I/O; 32-byte CDBs (the zoned case) are also emitted for plain reads/writes to a ZBC device without any capability check.\nUI:N - The command is submitted by the attacker's own I/O; no victim action or cooperation is needed.\nS:U - The corruption is confined to kernel memory within the same security authority — there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The memcpy reads roughly 512–768 MB past the end of the small `fcp_cmnd` DMA buffer, an unbounded out-of-bounds read of arbitrary kernel memory that is then written into the driver's WQE/heap region.\nI:H - This is an unbounded out-of-bounds write starting at `wqe->words[18]` inside `lpfc_cmd->cur_iocbq`, overwriting adjacent slab objects and function pointers with data whose leading bytes (LUN, FCP control, CDB) are attacker-chosen — classic heap-corruption territory for control-flow hijack.\nA:H - A multi-hundred-megabyte wild memcpy inevitably faults on unmapped memory or destroys critical kernel structures, producing a guaranteed oops/panic that can be re-triggered at will."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/lpfc/lpfc_sli.c"
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],
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"versions": [
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"lessThan": "9fd003f344d502f65252963169df3dd237054e49",
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"status": "affected",
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{
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"product": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/lpfc/lpfc_sli.c"
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],
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"versions": [
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{
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"version": "6.10",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.10",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10.3",
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"lessThanOrEqual": "6.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.11",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.10.3"
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/9fd003f344d502f65252963169df3dd237054e49"
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},
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{
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"url": "https://git.kernel.org/stable/c/8bc7c617642db6d8d20ee671fb6c4513017e7a7e"
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}
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],
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"title": "scsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages",
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-43816",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:09:16.258182Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"dateUpdated": "2024-09-12T17:33:04.878Z"
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} |