214 lines
11 KiB
JSON
214 lines
11 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-2022-50822",
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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": "2025-12-30T12:06:07.131Z",
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"datePublished": "2025-12-30T12:08:36.228Z",
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"dateUpdated": "2026-10-15T21:41:24.165Z"
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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": "2026-08-05T08:59:47.720Z"
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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\nRDMA/restrack: Release MR restrack when delete\n\nThe MR restrack also needs to be released when delete it, otherwise it\ncause memory leak as the task struct won't be released."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is reached via local InfiniBand uverbs MR deregistration (IB_USER_VERBS_CMD_DEREG_MR / UVERBS_METHOD_MR_DESTROY → uverbs_free_mr → ib_dereg_mr_user → rdma_restrack_del), not by processing remote network packets.\nAC:L - An attacker can reliably create and destroy MRs through uverbs, and can also drive the concurrent nldev RES_MR_GET path that holds a restrack reference; both sides of the race are attacker-controlled, so no external conditions are required.\nPR:L - uverbs device nodes are created mode 0666 with no capability check in ib_uverbs_open, and RDMA_NLDEV_CMD_RES_MR_GET does not require RDMA_NL_ADMIN_PERM, so an unprivileged local user on a system with an RDMA device (hardware or SoftRoCE) can trigger the bug.\nUI:N - Exploitation requires only the attacker's own uverbs and netlink operations; no action by another user is needed.\nS:U - Impact remains within the local kernel's authority (resource tracking / MR object lifetime); this is not a VM escape, IOMMU bypass, or other cross-boundary break.\nC:H - Skipping wait_for_completion lets ib_dereg_mr_user free the MR while nldev still holds a restrack kref and fill_res_mr_entry reads MR fields, yielding a use-after-free that can be leveraged for arbitrary disclosure.\nI:H - The same use-after-free of the MR/restrack object enables heap reuse and corruption primitives sufficient for integrity compromise or control-flow hijacking under the highest-severity interpretation.\nA:H - The UAF can cause kernel oops/crash, and even without winning the race every MR delete leaks a task_struct reference via the skipped rdma_restrack_put, which can exhaust kernel memory through repeated create/destroy."
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}
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]
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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/infiniband/core/restrack.c"
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],
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{
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"version": "13ef5539def732dc7b9c58c320d97a0a95b52634",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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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/infiniband/core/restrack.c"
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],
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"versions": [
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{
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"version": "5.10",
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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": "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": "5.15.86",
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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": "6.0.16",
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"lessThanOrEqual": "6.0.*",
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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": "6.1.2",
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"lessThanOrEqual": "6.1.*",
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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": "6.2",
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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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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10",
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"versionEndExcluding": "5.15.86"
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},
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"vulnerable": true,
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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/13586753ae55146269a6dc8b216f17d86b81560c"
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},
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{
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"url": "https://git.kernel.org/stable/c/37c90753079fc95d93cc31b79796dd2ae57ad018"
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},
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{
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"url": "https://git.kernel.org/stable/c/8731cb5c7820bef577bab4ff17691fbf61c671cb"
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},
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{
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"url": "https://git.kernel.org/stable/c/dac153f2802db1ad46207283cb9b2aae3d707a45"
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}
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],
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"title": "RDMA/restrack: Release MR restrack when delete",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-50822",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:32:37.622581Z"
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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": "2026-10-15T21:41:24.165Z"
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}
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}
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]
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}
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} |