122 lines
5.4 KiB
JSON
122 lines
5.4 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-2026-90270",
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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": "2026-09-11T19:38:34.797Z",
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"datePublished": "2026-09-17T16:08:04.648Z",
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"dateUpdated": "2026-10-19T09:00:47.928Z"
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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": "2026-10-19T09:00:47.928Z"
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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\narm_mpam: Disable driver unbind to avoid UAF\n\nWhen a user unbinds an MSC and that MSC is the only MSC left for a\ncomponent then the corresponding mpam_component will be freed. If the user\nthen goes on to read the schemata file in the resctrl filesystem then the\nmpam_component will be accessed from resctrl_arch_get_config() leading to a\nuse after free.\n\nAs the MPAM driver is not a module the unbind sysfs interface is the only\nway to trigger the remove. Instead of dealing with the complexity of\nallowing some unused MSC to unbind just remove the unbind sysfs interface."
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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/resctrl/mpam_devices.c"
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],
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"versions": [
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{
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"version": "f04046f2577a5c76167333ca99d3903ee5331ba0",
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"lessThan": "7d199b6a0651abad3ca6d0877dbedbe8fe6ea9e2",
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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": "f04046f2577a5c76167333ca99d3903ee5331ba0",
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"lessThan": "bb1a0f582d519c0461b0940116e2b52c5ba31459",
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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/resctrl/mpam_devices.c"
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],
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"versions": [
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{
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"version": "6.19",
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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": "6.19",
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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": "6.19",
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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": "6.19",
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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/7d199b6a0651abad3ca6d0877dbedbe8fe6ea9e2"
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},
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{
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"url": "https://git.kernel.org/stable/c/bb1a0f582d519c0461b0940116e2b52c5ba31459"
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}
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],
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"title": "arm_mpam: Disable driver unbind to avoid UAF",
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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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} |