CVE-2026-53328

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53328", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.398Z", "datePublished": "2026-07-01T13:32:14.030Z", "dateUpdated": "2026-07-01T13:32:14.030Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-01T13:32:14.030Z"}, "descriptions": [{"lang": "en", "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/ext.c"], "versions": [{"version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "lessThan": "cdff2eb97be147d2ce52ac1327841068781f25dc", "status": "affected", "versionType": "git"}, {"version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "lessThan": "0ffcad63b19a1cadb475c9f405a93607fdcd0d7c", "status": "affected", "versionType": "git"}, {"version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "lessThan": "bc75f5951fac4e49d175c4433fc08fb1ec01172f", "status": "affected", "versionType": "git"}, {"version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "lessThan": "02e545c4297a26dbbc41df81b831e7f605bcd306", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/ext.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cdff2eb97be147d2ce52ac1327841068781f25dc"}, {"url": "https://git.kernel.org/stable/c/0ffcad63b19a1cadb475c9f405a93607fdcd0d7c"}, {"url": "https://git.kernel.org/stable/c/bc75f5951fac4e49d175c4433fc08fb1ec01172f"}, {"url": "https://git.kernel.org/stable/c/02e545c4297a26dbbc41df81b831e7f605bcd306"}], "title": "sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/sched/ext.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cdff2eb97be147d2ce52ac1327841068781f25dc", "status": "affected", "version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "versionType": "git"}, {"lessThan": "0ffcad63b19a1cadb475c9f405a93607fdcd0d7c", "status": "affected", "version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "versionType": "git"}, {"lessThan": "bc75f5951fac4e49d175c4433fc08fb1ec01172f", "status": "affected", "version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "versionType": "git"}, {"lessThan": "02e545c4297a26dbbc41df81b831e7f605bcd306", "status": "affected", "version": "8195136669661fdfe54e9a8923c33b31c92fc1da", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/sched/ext.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.94", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.36", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7327870E-8777-43EF-92CB-081E4B51D6F9", "versionEndExcluding": "6.12.94", "versionStartIncluding": "6.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "389025D2-958D-41BD-BD96-70ED1033A9F3", "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E", "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "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."}], "id": "CVE-2026-53328", "lastModified": "2026-07-23T20:52:41.010", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-07-01T14:16:40.650", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02e545c4297a26dbbc41df81b831e7f605bcd306"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ffcad63b19a1cadb475c9f405a93607fdcd0d7c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc75f5951fac4e49d175c4433fc08fb1ec01172f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cdff2eb97be147d2ce52ac1327841068781f25dc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()", "id": "2495943", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2495943"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's `sched_ext` component. When `systemd`'s user manager interacts with `subtree_control` while `sched_ext` is loaded, a warning can be triggered. This occurs due to a mismatch in how `cgroup` and `css` identities are handled during task migration, potentially leading to system instability or a local denial of service."], "name": "CVE-2026-53328", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53328\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53328\nhttps://lore.kernel.org/linux-cve-announce/2026070142-CVE-2026-53328-d155@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8195136669661fdfe54e9a8923c33b31c92fc1da,cdff2eb97be147d2ce52ac1327841068781f25dc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8195136669661fdfe54e9a8923c33b31c92fc1da,0ffcad63b19a1cadb475c9f405a93607fdcd0d7c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8195136669661fdfe54e9a8923c33b31c92fc1da,bc75f5951fac4e49d175c4433fc08fb1ec01172f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8195136669661fdfe54e9a8923c33b31c92fc1da,02e545c4297a26dbbc41df81b831e7f605bcd306)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-01T18:45:05.402421+00:00", "updated": "2026-08-12T09:15:02.830271+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}