178 lines
7.6 KiB
JSON
178 lines
7.6 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-2021-46937",
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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": "2024-02-25T13:45:52.721Z",
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"datePublished": "2024-02-27T09:44:03.421Z",
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"dateUpdated": "2026-05-11T13:44:47.438Z"
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},
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"containers": {
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:44:47.438Z"
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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/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()'\n\nDAMON debugfs interface increases the reference counts of 'struct pid's\nfor targets from the 'target_ids' file write callback\n('dbgfs_target_ids_write()'), but decreases the counts only in DAMON\nmonitoring termination callback ('dbgfs_before_terminate()').\n\nTherefore, when 'target_ids' file is repeatedly written without DAMON\nmonitoring start/termination, the reference count is not decreased and\ntherefore memory for the 'struct pid' cannot be freed. This commit\nfixes this issue by decreasing the reference counts when 'target_ids' is\nwritten."
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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/damon/dbgfs.c"
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],
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"status": "affected",
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{
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"lessThan": "ebb3f994dd92f8fb4d70c7541091216c1e10cb71",
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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/damon/dbgfs.c"
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],
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.13",
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"lessThanOrEqual": "5.15.*",
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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": "5.16",
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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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"nodes": [
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.13"
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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": "5.15",
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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/ffe4a1ba1a82c416a6b3a09d46594f6a885ae141"
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},
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{
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"url": "https://git.kernel.org/stable/c/ebb3f994dd92f8fb4d70c7541091216c1e10cb71"
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}
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],
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"title": "mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()'",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"type": "ssvc",
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"content": {
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"id": "CVE-2021-46937",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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{
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},
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{
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"Technical Impact": "partial"
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],
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"version": "2.0.3",
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"timestamp": "2024-02-27T15:48:08.860920Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-07-05T17:22:00.927Z"
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"dateUpdated": "2024-08-04T05:17:43.028Z"
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"title": "CVE Program Container",
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"references": [
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"url": "https://git.kernel.org/stable/c/ffe4a1ba1a82c416a6b3a09d46594f6a885ae141",
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