143 lines
6.8 KiB
JSON
143 lines
6.8 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-2026-46042",
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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": "2026-05-13T15:03:33.094Z",
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"datePublished": "2026-05-27T12:56:56.830Z",
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"dateUpdated": "2026-06-14T17:50:08.044Z"
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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": "2026-06-14T17:50:08.044Z"
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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\nmm/mempolicy: fix memory leaks in weighted_interleave_auto_store()\n\nweighted_interleave_auto_store() fetches old_wi_state inside the if\n(!input) block only. This causes two memory leaks:\n\n1. When a user writes \"false\" and the current mode is already manual,\n the function returns early without freeing the freshly allocated\n new_wi_state.\n\n2. When a user writes \"true\", old_wi_state stays NULL because the\n fetch is skipped entirely. The old state is then overwritten by\n rcu_assign_pointer() but never freed, since the cleanup path is\n gated on old_wi_state being non-NULL. A user can trigger this\n repeatedly by writing \"1\" in a loop.\n\nFix both leaks by moving the old_wi_state fetch before the input check,\nmaking it unconditional. This also allows a unified early return for both\n\"true\" and \"false\" when the requested mode matches the current mode.\n\nReviewed by: Donet Tom <donettom@linux.ibm.com>"
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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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"mm/mempolicy.c"
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],
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"versions": [
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{
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"version": "e341f9c3c8412e57fe0042a33a2640245ecdf619",
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"lessThan": "c42a7efb9060d89b72708ffaf255d0002c2164a7",
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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": "e341f9c3c8412e57fe0042a33a2640245ecdf619",
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"lessThan": "39caa9ca863f96b3d00447c5aa200cabda489856",
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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": "e341f9c3c8412e57fe0042a33a2640245ecdf619",
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"lessThan": "6fae274ce0e3109cbbc4c18b354eaace1f0af7d7",
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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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"mm/mempolicy.c"
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],
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"versions": [
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{
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"version": "6.16",
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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": "6.16",
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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": "6.18.27",
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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": "7.0.4",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "6.16",
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"versionEndExcluding": "6.18.27"
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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": "6.16",
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"versionEndExcluding": "7.0.4"
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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": "6.16",
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"versionEndExcluding": "7.1"
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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/c42a7efb9060d89b72708ffaf255d0002c2164a7"
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},
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{
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"url": "https://git.kernel.org/stable/c/39caa9ca863f96b3d00447c5aa200cabda489856"
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},
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{
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"url": "https://git.kernel.org/stable/c/6fae274ce0e3109cbbc4c18b354eaace1f0af7d7"
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}
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],
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"title": "mm/mempolicy: fix memory leaks in weighted_interleave_auto_store()",
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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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} |