277 lines
14 KiB
JSON
277 lines
14 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-2026-74390",
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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": "2026-08-15T05:44:03.891Z",
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"datePublished": "2026-08-15T05:59:04.479Z",
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"dateUpdated": "2026-10-16T19:05:40.715Z"
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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": "2026-08-17T05:46:38.735Z"
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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/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs\n\nThe irdma_copy_user_pgaddrs function loops through all of the umem DMA\nblocks to populate the PBLEs and will stop when either the last DMA\nblock is reached or palloc->total_cnt is reached. The issue is that\nthe logic for checking palloc->total_cnt would only work for non-zero\nvalues.\n\nWhen irdma_setup_pbles is called with lvl==0, it\ncalls irdma_copy_user_pgaddrs with palloc->total_cnt==0, which means\nthe only way to break out of the loop is to reach the last umem DMA\nblock, which means it could end up going beyond the fixed size of 4\niwmr->pgaddrmem array that is used in the lvl==0 case.\n\nIn the case of QP/CQ/SRQ rings, the value of lvl is determined by a\nseparate input (for example, req.cq_pages in the case of a CQ). So,\nwe must perform explicit checking to ensure we don't overflow the\npgaddrmem array if the user provides a umem that consists of more\nblocks than their provided req.cq_pages."
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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 a local ioctl on /dev/infiniband/uverbs to register CQ/QP/SRQ memory via irdma_reg_user_mr; the bug is not reachable from remote iWARP/RoCE packet handling.\nAC:L - An attacker fully controls reg_type, cq_pages/sq_pages/rq_pages, and umem size; triggering lvl==0 with many DMA blocks is deterministic and needs no races or special memory layout.\nPR:L - Any unprivileged local user who can open the uverbs device (mode 0666) and use the RDMA NIC—typical on cloud/HPC RDMA nodes—can invoke the vulnerable MR registration path without real root.\nUI:N - No victim interaction is required; the attacker triggers the overflow directly through their own RDMA verbs memory registration calls.\nS:U - Impact is kernel heap corruption and privilege escalation within the host kernel security boundary, not a cross-VM or cross-IOMMU sandbox escape.\nC:H - The out-of-bounds write of attacker-influenced DMA addresses into adjacent irdma_mr/iwpbl heap metadata can be leveraged for arbitrary kernel memory read primitives, not merely a bounded leak.\nI:H - Controlled out-of-bounds u64 writes past pgaddrmem[4] corrupt adjacent kernel heap structures and are suitable for control-flow or arbitrary kernel write exploitation.\nA:H - Heap corruption in a kzalloc'd irdma_mr can cause immediate kernel oops/panic during registration or on subsequent use of corrupted queue memory metadata."
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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/hw/irdma/verbs.c"
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],
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"versions": [
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{
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"version": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "4780f58672ee6328accd54a95f9c00683477e499",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "79a20a8e201a779224b4bf115250a7713bde72c0",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "9f8f0d2099e3de1194e37dc933ae0c4206b09aaf",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "192a3be0e3759daa24af2841208b074ca6dbaabc",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "424d51d33c7541a86934067c2c0538124687fc90",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "abd27a977b419d584efa659488c22d2306987b29",
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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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
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"lessThan": "5ebb3ed757be3e04cf803026004aa0beaeb13e9b",
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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/hw/irdma/verbs.c"
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],
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"versions": [
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{
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"version": "5.14",
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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": "5.14",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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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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{
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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": "5.14",
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"versionEndExcluding": "5.15.212"
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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": "5.14",
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"versionEndExcluding": "6.1.178"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/4780f58672ee6328accd54a95f9c00683477e499"
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},
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{
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"url": "https://git.kernel.org/stable/c/79a20a8e201a779224b4bf115250a7713bde72c0"
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},
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{
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"url": "https://git.kernel.org/stable/c/9f8f0d2099e3de1194e37dc933ae0c4206b09aaf"
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},
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{
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"url": "https://git.kernel.org/stable/c/192a3be0e3759daa24af2841208b074ca6dbaabc"
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},
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{
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"url": "https://git.kernel.org/stable/c/424d51d33c7541a86934067c2c0538124687fc90"
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},
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{
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"url": "https://git.kernel.org/stable/c/abd27a977b419d584efa659488c22d2306987b29"
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},
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{
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"url": "https://git.kernel.org/stable/c/5ebb3ed757be3e04cf803026004aa0beaeb13e9b"
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}
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],
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"title": "RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs",
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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-2026-74390",
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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": "2026-10-16T18:55:16.364309Z"
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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": "2026-10-16T19:05:40.715Z"
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}
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}
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]
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}
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} |