289 lines
15 KiB
JSON
289 lines
15 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-2026-68417",
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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": "2026-07-30T09:28:09.391Z",
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"datePublished": "2026-08-10T12:04:37.936Z",
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"dateUpdated": "2026-10-19T21:09:09.356Z"
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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": "2026-08-19T16:35:15.087Z"
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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\nRDMA/siw: publish QP after initialization\n\nsiw_create_qp() currently calls siw_qp_add() before the queues, CQ\npointers, state, completion, and device list entry are ready. A QPN\nlookup can therefore reach a QP that is still being constructed.\n\nMove siw_qp_add() to the end of siw_create_qp(), after QP\ninitialization and before adding the QP to the siw device list."
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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 - Exploitation requires local access to the RDMA character devices (/dev/infiniband/uverbsN for create_qp and /dev/infiniband/rdma_cm for the QPN lookup); no network packet reaches the racing code path without a local trigger first.\nAC:L - The attacker controls both sides of the race: one thread issues create_qp while another issues rdma_connect/rdma_accept with an attacker-supplied qp_num, and QPNs from xa_alloc(XA_FLAGS_ALLOC1) are predictable. The post-publish failure can be made deterministic by passing a short udata->outlen, so the window is wide and repeatable at will.\nPR:L - Any unprivileged local user with access to the siw uverbs and rdma_cm character devices can create QPs and issue rdma_connect/rdma_accept with an arbitrary qp_num; no capability check gates siw_create_qp, siw_connect or siw_accept.\nUI:N - The attacker drives both the QP creation and the concurrent QPN lookup from its own threads; no action by any other user or administrator is needed.\nS:U - The corruption is confined to kernel memory managed by the same kernel security authority; there is no crossing of a VM, IOMMU or sandbox boundary.\nC:H - The siw_qp object can be kfree'd by the ib core error path while the CM thread still holds a reference, giving a use-after-free on a slab object the attacker can groom and read back through QP/CM state, enabling disclosure of arbitrary kernel memory.\nI:H - After the free, siw_free_qp() performs list_del(&qp->devq), vfree() of four pointer fields and siw_put_tx_cpu(qp->tx_cpu) using values read from reallocated attacker-controlled memory, yielding arbitrary-pointer free, list-unlink writes and out-of-range per-CPU decrements suitable for control-flow hijacking.\nA:H - Even without exploitation the race reliably causes kernel crashes: NULL sendq/recvq/scq/rcq dereferences, list_del on an uninitialized devq head, waits on an uninitialized qp_free completion, and use-after-free oopses."
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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/infiniband/sw/siw/siw_verbs.c"
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],
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"versions": [
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{
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"version": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "3c9d128219964dcea897bf6139b88242e987be8f",
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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": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "3ff82e3841ecab1ff38d5817c969a019d266c83c",
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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": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "36e91a58397ca8c978e38a0bf389f0c6113fa8ca",
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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": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "74912ad168f87d6b2b670a87987bb302d6e64aa1",
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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": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "fcc9d50022bcdb1f9f7ed04955c72b4a7355af3d",
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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": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "52f9fcb191143448df55fd215ff09c5207fed43e",
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"status": "affected",
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"versionType": "git"
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{
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"version": "f29dd55b0236f7a26a4b9dd69186e3c04266797b",
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"lessThan": "bb27fcc67c429d97f785c92c35a6c5adebb05d7f",
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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/infiniband/sw/siw/siw_verbs.c"
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],
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"versions": [
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{
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"version": "5.3",
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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": "5.3",
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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": "5.15.216",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.183",
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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": "6.6.148",
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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": "6.12.101",
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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": "6.18.42",
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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": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.15.216"
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/3c9d128219964dcea897bf6139b88242e987be8f"
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},
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{
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"url": "https://git.kernel.org/stable/c/3ff82e3841ecab1ff38d5817c969a019d266c83c"
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},
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{
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"url": "https://git.kernel.org/stable/c/36e91a58397ca8c978e38a0bf389f0c6113fa8ca"
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"url": "https://git.kernel.org/stable/c/74912ad168f87d6b2b670a87987bb302d6e64aa1"
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},
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{
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"url": "https://git.kernel.org/stable/c/fcc9d50022bcdb1f9f7ed04955c72b4a7355af3d"
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},
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{
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"url": "https://git.kernel.org/stable/c/52f9fcb191143448df55fd215ff09c5207fed43e"
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{
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"url": "https://git.kernel.org/stable/c/bb27fcc67c429d97f785c92c35a6c5adebb05d7f"
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}
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],
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"title": "RDMA/siw: publish QP after initialization",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-68417",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:48:32.516478Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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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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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T21:09:09.356Z"
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}
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}
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]
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}
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} |