164 lines
8.4 KiB
JSON
164 lines
8.4 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-2026-53328",
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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": "2026-06-09T07:44:35.398Z",
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"datePublished": "2026-07-01T13:32:14.030Z",
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"dateUpdated": "2026-07-01T13:32:14.030Z"
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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": "2026-07-01T13:32:14.030Z"
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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\nsched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()\n\nA WARN fires when systemd's user manager writes \"+cpu +memory +pids\" to\nits own subtree_control while a sched_ext scheduler is loaded:\n\n WARNING: at kernel/sched/ext.c:3227 scx_cgroup_move_task+0xa8/0xb0\n scx_cgroup_move_task+0xa8/0xb0\n sched_move_task+0x134/0x290\n cpu_cgroup_attach+0x39/0x70\n cgroup_migrate_execute+0x37d/0x450\n cgroup_update_dfl_csses+0x1e3/0x270\n cgroup_subtree_control_write+0x3e7/0x440\n\nscx_cgroup_can_attach() arms cgrp_moving_from only when a task's cpu\ncgroup changes. It can still be NULL when scx_cgroup_move_task() runs,\nthrough this sequence:\n\n Step Result\n --------------------------------- ----------------------------------\n 1. cpu enabled on cgroup G cpu css = A\n 2. cpu toggled off then on for G A killed, B created (same cgroup)\n 3. an exiting task keeps A alive migration skips it, A now stale\n 4. +memory migrates G stale A vs current B pulls cpu in\n 5. cpu attach runs for all tasks hits a live, cpu-unchanged task\n 6. scx_cgroup_move_task() on it cgrp_moving_from NULL -> WARN\n\nThe mismatch is that scx_cgroup_can_attach() keys on cgroup identity\nwhile migration drives the move on css identity, so a NULL cgrp_moving_from\nhere is a legitimate css-only migration, not a missing prep.\n\nThe call is already gated on cgrp_moving_from, so just drop the warning.\nops.cgroup_prep_move() and ops.cgroup_move() stay paired."
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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/sched/ext.c"
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],
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"versions": [
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{
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"version": "8195136669661fdfe54e9a8923c33b31c92fc1da",
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"lessThan": "cdff2eb97be147d2ce52ac1327841068781f25dc",
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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": "8195136669661fdfe54e9a8923c33b31c92fc1da",
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"lessThan": "0ffcad63b19a1cadb475c9f405a93607fdcd0d7c",
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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": "8195136669661fdfe54e9a8923c33b31c92fc1da",
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"lessThan": "bc75f5951fac4e49d175c4433fc08fb1ec01172f",
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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": "8195136669661fdfe54e9a8923c33b31c92fc1da",
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"lessThan": "02e545c4297a26dbbc41df81b831e7f605bcd306",
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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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"kernel/sched/ext.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "6.12",
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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": "6.12.94",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.36",
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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": "7.0.13",
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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": "6.12",
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"versionEndExcluding": "6.12.94"
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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": "6.12",
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"versionEndExcluding": "6.18.36"
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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": "6.12",
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"versionEndExcluding": "7.0.13"
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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": "6.12",
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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/cdff2eb97be147d2ce52ac1327841068781f25dc"
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},
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{
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"url": "https://git.kernel.org/stable/c/0ffcad63b19a1cadb475c9f405a93607fdcd0d7c"
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},
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{
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"url": "https://git.kernel.org/stable/c/bc75f5951fac4e49d175c4433fc08fb1ec01172f"
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},
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{
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"url": "https://git.kernel.org/stable/c/02e545c4297a26dbbc41df81b831e7f605bcd306"
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}
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],
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"title": "sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()",
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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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} |