180 lines
9.5 KiB
JSON
180 lines
9.5 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-2026-99094",
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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": "2026-09-25T10:25:14.390Z",
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"datePublished": "2026-10-26T14:52:02.053Z",
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"dateUpdated": "2026-10-31T12:42:42.980Z"
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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": "2026-10-31T12:42:42.980Z"
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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\nBluetooth: btintel_pcie: fix TX descriptor bounds check\n\nbtintel_pcie_prepare_tx() uses tfd_index to access the TFD and data\nbuffer arrays before the index is advanced modulo txq->count. An index\nequal to txq->count is one past the end of both arrays, so reject it in\nthe bounds check."
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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:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.5,
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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:A - An adjacent BR/EDR peer's L2CAP Echo Request enters via btintel_pcie_msix_rx_handle() and l2cap_bredr_sig_cmd(), which echoes peer bytes through hci_send_frame() -> btintel_pcie_send_frame() -> patched btintel_pcie_send_sync(). Bluetooth radio range makes this AV:A.\nAC:H - The peer cannot create tfd_index==32: btintel_pcie_alloc() zeroes tr_hia, the ordered HCI workqueue serializes sends, btintel_pcie_send_sync() advances it modulo txq->count, and resets only zero it. Reaching 32 therefore needs corruption or a fault outside attacker control.\nPR:N - l2cap_bredr_sig_cmd() handles L2CAP_ECHO_REQ by directly queuing L2CAP_ECHO_RSP; that branch has no pairing, authentication, or capability gate, so the adjacent peer needs no target privileges.\nUI:N - No user action occurs in this path; after the bad head-index state exists, receipt of L2CAP_ECHO_REQ automatically builds and transmits the response into btintel_pcie_send_sync().\nS:U - btintel_pcie_prepare_tx() corrupts the host kernel's TX descriptors or memory reached through the post-array data pointer; it does not cross a VM, IOMMU, or other security authority.\nC:H - At index 32, btintel_pcie_prepare_tx() reads bufs[32].data beyond the heap array and writes peer-controlled Echo Response bytes through that pointer; this kernel memory corruption can enable control-flow hijack and disclosure.\nI:H - btintel_pcie_prepare_tx() zeroes and fills tfds[32] past the 32-entry descriptor array, then memcpy() writes through the out-of-bounds bufs[32].data pointer, providing exploitable kernel-memory modification.\nA:H - The invalid bufs[32].data pointer can fault the kernel in memcpy(), while the tfds[32] write corrupts the adjacent URBD0 completion-descriptor area and can stop the Bluetooth transport."
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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/bluetooth/btintel_pcie.c"
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],
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"versions": [
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{
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"version": "6e65a09f927566f257322358d429b267548473eb",
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"lessThan": "08704ec6d4bf69725e7815b09a9b5c7af83e255b",
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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": "6e65a09f927566f257322358d429b267548473eb",
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"lessThan": "39ab048cce70d50af48015f5f294c4cf80d6ba89",
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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": "6e65a09f927566f257322358d429b267548473eb",
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"lessThan": "2669567615215d52fb306053cbcc1f53dc386158",
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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": "6e65a09f927566f257322358d429b267548473eb",
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"lessThan": "baa53af641c9e3644e717b8dfd1b95a55a0c111b",
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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/bluetooth/btintel_pcie.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": "6.12.113",
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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": "6.18.57",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.11",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "6.10",
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"versionEndExcluding": "6.12.113"
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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": "6.10",
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"versionEndExcluding": "6.18.57"
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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": "6.10",
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"versionEndExcluding": "7.2.11"
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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": "6.10",
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"versionEndExcluding": "7.3"
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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/08704ec6d4bf69725e7815b09a9b5c7af83e255b"
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},
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{
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"url": "https://git.kernel.org/stable/c/39ab048cce70d50af48015f5f294c4cf80d6ba89"
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},
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{
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"url": "https://git.kernel.org/stable/c/2669567615215d52fb306053cbcc1f53dc386158"
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},
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{
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"url": "https://git.kernel.org/stable/c/baa53af641c9e3644e717b8dfd1b95a55a0c111b"
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}
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],
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"title": "Bluetooth: btintel_pcie: fix TX descriptor bounds check",
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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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} |