214 lines
11 KiB
JSON
214 lines
11 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-2026-90206",
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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": "2026-09-11T19:38:34.793Z",
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"datePublished": "2026-09-17T16:07:22.173Z",
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"dateUpdated": "2026-10-30T12:34:46.536Z"
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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": "2026-10-30T12:34:46.536Z"
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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\nnvmet: fix max_qid race between configfs and controller allocation\n\nThe function nvmet_subsys_attr_qid_max_store() can race against\nnvmet_alloc_ctrl() when a subsystem's max_qid limit is modified.\n\nSuppose max_qid is currently 64. If nvmet_alloc_ctrl() executes:\nctrl->sqs = kzalloc_objs(struct nvmet_sq *, subsys->max_qid + 1);\nand at this exact point, a userspace process changes max_qid to 128,\nnvmet_subsys_attr_qid_max_store() will set the new max_qid value. It\nattempts to delete active controllers to force a reconnect, but the\nnew controller won't be deleted because it hasn't been added to the\nsubsys->ctrls list yet.\n\nnvmet_alloc_ctrl() then proceeds and adds the new controller to the\nsubsys->ctrls list. Later, when nvmet_install_queue() is called, it\nwill see max_qid set to 128, but the memory allocated for sqs is only\nsized for 64 entries. This results in a KASAN out-of-bounds warning\nand potential memory corruptions.\n\nFix this by protecting the queue allocations and list insertion in\nnvmet_alloc_ctrl() with down_read(&nvmet_config_sem). Because\nnvmet_subsys_attr_qid_max_store() acquires down_write(&nvmet_config_sem)\nto modify the attribute, this safely prevents the configfs writer from\nmodifying max_qid during controller creation.\n\nCopy the max_qid from the subsystem to the controller's structure\nduring the allocation; ctrl->max_qid never changes as long as the\ncontroller remains in LIVE state, so this will prevent similar race\nconditions."
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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/nvme/target/admin-cmd.c",
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"drivers/nvme/target/core.c",
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"drivers/nvme/target/fabrics-cmd.c",
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"drivers/nvme/target/nvmet.h",
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"drivers/nvme/target/pci-epf.c"
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],
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"versions": [
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{
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"version": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "cae0f5ed6ce7af3f7e0003c417f1953a350f55bf",
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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": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "af811970da4f0a928f5a1b1a946a04f755ce86f2",
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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": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "a1b88a1782eb6b368071dcda548a41b5c23d8cd2",
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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": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "6e6f8e3bfc66dff1833a48ecfd857268cff3be84",
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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": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "2c23fc91789dfd9db746edb3ae9b90d65fabd410",
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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": "3e980f5995e0bb4d86fef873a9c9ad66721580d0",
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"lessThan": "f1a8846e06388113dfdbb89dee005083fa9afdf9",
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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/nvme/target/admin-cmd.c",
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"drivers/nvme/target/core.c",
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"drivers/nvme/target/fabrics-cmd.c",
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"drivers/nvme/target/nvmet.h",
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"drivers/nvme/target/pci-epf.c"
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],
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"versions": [
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{
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"version": "6.1",
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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": "6.1",
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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": "6.1.191",
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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": "6.12.114",
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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": "7.2.6",
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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": "6.1",
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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": "6.1",
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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": "6.1",
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"versionEndExcluding": "6.12.114"
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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": "6.1",
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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": "6.1",
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"versionEndExcluding": "7.2.6"
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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": "6.1",
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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/cae0f5ed6ce7af3f7e0003c417f1953a350f55bf"
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},
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{
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"url": "https://git.kernel.org/stable/c/af811970da4f0a928f5a1b1a946a04f755ce86f2"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1b88a1782eb6b368071dcda548a41b5c23d8cd2"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e6f8e3bfc66dff1833a48ecfd857268cff3be84"
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},
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{
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"url": "https://git.kernel.org/stable/c/2c23fc91789dfd9db746edb3ae9b90d65fabd410"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1a8846e06388113dfdbb89dee005083fa9afdf9"
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}
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],
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"title": "nvmet: fix max_qid race between configfs and controller allocation",
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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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} |