358 lines
17 KiB
JSON
358 lines
17 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-2022-49607",
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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": "2025-02-26T02:21:30.417Z",
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"datePublished": "2025-02-26T02:23:31.823Z",
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"dateUpdated": "2026-05-23T15:22:30.837Z"
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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": "2026-05-23T15:22:30.837Z"
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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\nperf/core: Fix data race between perf_event_set_output() and perf_mmap_close()\n\nYang Jihing reported a race between perf_event_set_output() and\nperf_mmap_close():\n\n\tCPU1\t\t\t\t\tCPU2\n\n\tperf_mmap_close(e2)\n\t if (atomic_dec_and_test(&e2->rb->mmap_count)) // 1 - > 0\n\t detach_rest = true\n\n\t\t\t\t\t\tioctl(e1, IOC_SET_OUTPUT, e2)\n\t\t\t\t\t\t perf_event_set_output(e1, e2)\n\n\t ...\n\t list_for_each_entry_rcu(e, &e2->rb->event_list, rb_entry)\n\t ring_buffer_attach(e, NULL);\n\t // e1 isn't yet added and\n\t // therefore not detached\n\n\t\t\t\t\t\t ring_buffer_attach(e1, e2->rb)\n\t\t\t\t\t\t list_add_rcu(&e1->rb_entry,\n\t\t\t\t\t\t\t\t &e2->rb->event_list)\n\nAfter this; e1 is attached to an unmapped rb and a subsequent\nperf_mmap() will loop forever more:\n\n\tagain:\n\t\tmutex_lock(&e->mmap_mutex);\n\t\tif (event->rb) {\n\t\t\t...\n\t\t\tif (!atomic_inc_not_zero(&e->rb->mmap_count)) {\n\t\t\t\t...\n\t\t\t\tmutex_unlock(&e->mmap_mutex);\n\t\t\t\tgoto again;\n\t\t\t}\n\t\t}\n\nThe loop in perf_mmap_close() holds e2->mmap_mutex, while the attach\nin perf_event_set_output() holds e1->mmap_mutex. As such there is no\nserialization to avoid this race.\n\nChange perf_event_set_output() to take both e1->mmap_mutex and\ne2->mmap_mutex to alleviate that problem. Additionally, have the loop\nin perf_mmap() detach the rb directly, this avoids having to wait for\nthe concurrent perf_mmap_close() to get around to doing it to make\nprogress."
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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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"kernel/events/core.c"
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],
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"versions": [
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{
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"version": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "3bbd868099287ff9027db59029b502fcfa2202a0",
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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": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "f836f9ac95df15f1e0af4beb0ec20021e8c91998",
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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": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "17f5417194136517ee9bbd6511249e5310e5617c",
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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": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "98c3c8fd0d4c560e0f8335b79c407bbf7fc9462c",
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"status": "affected",
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},
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{
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"version": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "43128b3eee337824158f34da6648163d2f2fb937",
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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": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "da3c256e2d0ebc87c7db0c605c9692b6f1722074",
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"status": "affected",
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},
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{
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"version": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "a9391ff7a7c5f113d6f2bf6621d49110950de49c",
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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": "9bb5d40cd93c9dd4be74834b1dcb1ba03629716b",
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"lessThan": "68e3c69803dada336893640110cb87221bb01dcf",
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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": "2487f0db30527032c4d56fc2d0b1a240fe89fef8",
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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": "703197b61d05f5edae54bad3256901c5a5c8794c",
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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": "c52217e88ae0f3a4ae00562d86e338f8f85969b4",
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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": "3.2.49",
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"lessThan": "3.3",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "3.4.52",
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"lessThan": "3.5",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "3.9.8",
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"lessThan": "3.10",
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"status": "affected",
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"versionType": "semver"
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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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"kernel/events/core.c"
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],
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"versions": [
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{
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"version": "3.10",
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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": "3.10",
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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": "4.9.325",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.290",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.254",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.208",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.134",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.58",
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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": "5.18.15",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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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": "3.10",
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"versionEndExcluding": "4.9.325"
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},
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{
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},
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},
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"versionStartIncluding": "3.9.8"
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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/3bbd868099287ff9027db59029b502fcfa2202a0"
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},
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{
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"url": "https://git.kernel.org/stable/c/f836f9ac95df15f1e0af4beb0ec20021e8c91998"
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},
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{
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"url": "https://git.kernel.org/stable/c/17f5417194136517ee9bbd6511249e5310e5617c"
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},
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{
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"url": "https://git.kernel.org/stable/c/98c3c8fd0d4c560e0f8335b79c407bbf7fc9462c"
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},
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{
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"url": "https://git.kernel.org/stable/c/43128b3eee337824158f34da6648163d2f2fb937"
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},
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{
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"url": "https://git.kernel.org/stable/c/da3c256e2d0ebc87c7db0c605c9692b6f1722074"
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},
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{
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"url": "https://git.kernel.org/stable/c/a9391ff7a7c5f113d6f2bf6621d49110950de49c"
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},
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{
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"url": "https://git.kernel.org/stable/c/68e3c69803dada336893640110cb87221bb01dcf"
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}
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],
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"title": "perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()",
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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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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 4.7,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "HIGH",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-49607",
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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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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-10-01T19:35:03.904350Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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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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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-10-01T19:36:51.711Z"
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}
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}
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]
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}
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} |