201 lines
12 KiB
JSON
201 lines
12 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-2024-58006",
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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": "2025-02-27T02:10:48.227Z",
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"datePublished": "2025-02-27T02:12:02.932Z",
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"dateUpdated": "2026-10-30T12:20:36.342Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:20:36.342Z"
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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\nPCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar()\n\nIn commit 4284c88fff0e (\"PCI: designware-ep: Allow pci_epc_set_bar() update\ninbound map address\") set_bar() was modified to support dynamically\nchanging the backing physical address of a BAR that was already configured.\n\nThis means that set_bar() can be called twice, without ever calling\nclear_bar() (as calling clear_bar() would clear the BAR's PCI address\nassigned by the host).\n\nThis can only be done if the new BAR size/flags does not differ from the\nexisting BAR configuration. Add these missing checks.\n\nIf we allow set_bar() to set e.g. a new BAR size that differs from the\nexisting BAR size, the new address translation range will be smaller than\nthe BAR size already determined by the host, which would mean that a read\npast the new BAR size would pass the iATU untranslated, which could allow\nthe host to read memory not belonging to the new struct pci_epf_bar.\n\nWhile at it, add comments which clarifies the support for dynamically\nchanging the physical address of a BAR. (Which was also missing.)"
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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:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
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"baseScore": 9.6,
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"baseSeverity": "CRITICAL"
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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:A - The attacker is the PCIe root complex on the other end of an existing point-to-point link (the classic Linux EP deployment: DPU/SmartNIC/accelerator or NTB host-to-host interconnect), sending TLPs and scratchpad writes over a shared, non-routable fabric — a logically adjacent topology. No physical manipulation of the endpoint is needed at exploit time, so this is Adjacent rather than Physical or Local.\nAC:L - The peer host fully and deterministically controls the memory-window size it advertises in the NTB scratchpads, which propagates unvalidated to `epf_bar->size` and reprograms the inbound iATU; there is no race, timing window, or memory-layout condition outside the attacker's control.\nPR:N - NTB link negotiation performs no authentication whatsoever — the endpoint reads the size scratchpads from the host-writable control BAR as soon as the link comes up, so the attacking host needs no credentials or privileges on the endpoint system.\nUI:N - The endpoint's `ntb_transport_link_work()` runs automatically on link-up and consumes the host-supplied sizes with no operator action; the attacker drives the entire sequence from its own side of the link.\nS:C - The inbound iATU is the endpoint's address-translation and containment boundary for host-originated transactions — the endpoint-side equivalent of an IOMMU — and this bug lets transactions pass it untranslated. A failure of that DMA/address-translation boundary lets one security authority (the remote host) reach memory in a different authority (the endpoint OS), matching the IOMMU/DMA-bypass Changed criterion.\nC:H - With the BAR aperture larger than the translation window, the host can read endpoint physical memory outside the backing `pci_epf_bar` allocation — the commit message states this explicitly — yielding a large out-of-bounds/effectively arbitrary kernel memory read.\nI:H - PCI memory BAR windows are read/write, so the same mis-sized window gives the host out-of-bounds writes into endpoint physical memory beyond the intended buffer, corrupting adjacent kernel data or code and enabling control-flow hijacking on the endpoint.\nA:H - Arbitrary writes into endpoint physical memory readily panic the kernel, and untranslated transactions escaping the iATU onto the internal bus can raise bus errors/aborts, crashing or hanging the endpoint system."
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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/pci/controller/dwc/pcie-designware-ep.c"
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],
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"versions": [
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{
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"version": "4284c88fff0efc4e418abb53d78e02dc4f099d6c",
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"lessThan": "8dbc2d9e6b8612b9d5f41c0ea875e86183ff9617",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4284c88fff0efc4e418abb53d78e02dc4f099d6c",
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"lessThan": "01aaa7935af3050fd1e1e7de50001247c75baeab",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4284c88fff0efc4e418abb53d78e02dc4f099d6c",
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"lessThan": "b5cacfd067060c75088363ed3e19779078be2755",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4284c88fff0efc4e418abb53d78e02dc4f099d6c",
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"lessThan": "3229c15d6267de8e704b4085df8a82a5af2d63eb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4284c88fff0efc4e418abb53d78e02dc4f099d6c",
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"lessThan": "3708acbd5f169ebafe1faa519cb28adc56295546",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "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/pci/controller/dwc/pcie-designware-ep.c"
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],
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"versions": [
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{
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"version": "6.0",
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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": "6.0",
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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": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.14",
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"lessThanOrEqual": "6.12.*",
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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": "6.13.3",
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"lessThanOrEqual": "6.13.*",
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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": "6.14",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.6.160"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.12.14"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.13.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.14"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/8dbc2d9e6b8612b9d5f41c0ea875e86183ff9617"
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},
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{
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"url": "https://git.kernel.org/stable/c/01aaa7935af3050fd1e1e7de50001247c75baeab"
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},
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{
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"url": "https://git.kernel.org/stable/c/b5cacfd067060c75088363ed3e19779078be2755"
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},
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{
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"url": "https://git.kernel.org/stable/c/3229c15d6267de8e704b4085df8a82a5af2d63eb"
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},
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{
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"url": "https://git.kernel.org/stable/c/3708acbd5f169ebafe1faa519cb28adc56295546"
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}
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],
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"title": "PCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |