122 lines
5.8 KiB
JSON
122 lines
5.8 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-2026-93075",
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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": "2026-09-17T15:57:05.661Z",
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"datePublished": "2026-09-17T16:10:57.699Z",
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"dateUpdated": "2026-10-19T09:05:11.005Z"
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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": "2026-10-19T09:05:11.005Z"
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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\ndax/fsdev: clear pgmap ops and owner on unbind\n\nfsdev_dax_probe() sets pgmap->ops = &fsdev_pagemap_ops and\npgmap->owner = dev_dax, but nothing ever clears them. For a dynamic\ndevice the pgmap is devm-allocated and freed on unbind, so this is\nharmless. For a static device the pgmap is the shared, long-lived one\nowned by the dax bus (kill_dev_dax() only NULLs dev_dax->pgmap for the\nnon-static case), and device.c's probe sets only pgmap->type, never\nclearing ops/owner.\n\nSo after fsdev unbinds a static device the stale fsdev_pagemap_ops\nsurvives on the shared pgmap. If the device is then rebound to\ndevice_dax (MEMORY_DEVICE_GENERIC, which installs no ->memory_failure),\nor the fsdev_dax module is unloaded, a subsequent memory_failure on that\npgmap dispatches through the stale -- and possibly freed -- handler.\n\nRegister a devm action that clears pgmap->ops and pgmap->owner on unbind,\nsymmetric with setting them at probe, so the pgmap carries no fsdev state\nonce fsdev is detached."
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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/dax/fsdev.c"
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],
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"versions": [
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{
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"version": "d5406bd458b0ac10b1301a4d5801d85c8f648637",
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"lessThan": "9b0f91dc9147a8601cec3d4d83cf13c6aaf71b27",
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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": "d5406bd458b0ac10b1301a4d5801d85c8f648637",
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"lessThan": "f48884ac31b6bfc99f36b3f207b8c0cbe5d54bd7",
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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/dax/fsdev.c"
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],
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"versions": [
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{
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"version": "7.1",
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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": "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": "7.2.6",
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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": "7.1",
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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": "7.1",
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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/9b0f91dc9147a8601cec3d4d83cf13c6aaf71b27"
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},
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{
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"url": "https://git.kernel.org/stable/c/f48884ac31b6bfc99f36b3f207b8c0cbe5d54bd7"
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}
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],
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"title": "dax/fsdev: clear pgmap ops and owner on unbind",
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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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} |