147 lines
6.9 KiB
JSON
147 lines
6.9 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-2026-93096",
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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": "2026-09-17T16:02:15.084Z",
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"datePublished": "2026-09-17T16:11:10.359Z",
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"dateUpdated": "2026-10-19T09:05:29.455Z"
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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": "2026-10-19T09:05:29.455Z"
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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\ncxl/features: Serialize multi-part Get/Set Feature transfers\n\nA Get or Set Feature payload larger than the mailbox payload size is\nsplit into several mailbox commands. mbox_mutex only serializes\nindividual mailbox commands and is dropped between iterations of these\nloops. Nothing serializes the multi-part transfer as a whole.\ncxl_get_feature() and cxl_set_feature() are reachable concurrently\nfrom fwctl (per-fd RPCs run under a read-held registration lock) and\nfrom the EDAC scrub/ECS/repair paths, so two transfers to the same\nmailbox can interleave their parts and corrupt the device's transfer\ncontext.\n\nAdd a per-mailbox feat_mutex and hold it across the whole transfer in\nboth functions. It nests outside mbox_mutex (which is taken inside\ncxl_internal_send_cmd()), and is taken nowhere else, so no lock-ordering\ninversion is introduced."
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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/cxl/core/features.c",
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"drivers/cxl/core/mbox.c",
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"include/cxl/mailbox.h"
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],
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"versions": [
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{
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"version": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
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"lessThan": "c6492e17412048387435f256ffafc4dd6518db28",
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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": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
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"lessThan": "7682b617db1f19bc606b5f1badadcf1e63a87b14",
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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": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
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"lessThan": "77b814c1832fde018c30357b4ec3fcdaa91a1c10",
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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/cxl/core/features.c",
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"drivers/cxl/core/mbox.c",
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"include/cxl/mailbox.h"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.18.57",
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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": "6.15",
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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": "6.15",
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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": "6.15",
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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/c6492e17412048387435f256ffafc4dd6518db28"
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},
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{
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"url": "https://git.kernel.org/stable/c/7682b617db1f19bc606b5f1badadcf1e63a87b14"
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},
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{
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"url": "https://git.kernel.org/stable/c/77b814c1832fde018c30357b4ec3fcdaa91a1c10"
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}
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],
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"title": "cxl/features: Serialize multi-part Get/Set Feature transfers",
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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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} |