{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-71142",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:30:19.661Z",
        "datePublished": "2026-01-14T15:07:55.145Z",
        "dateUpdated": "2026-05-11T21:55:47.485Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:55:47.485Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpuset: fix warning when disabling remote partition\n\nA warning was triggered as follows:\n\nWARNING: kernel/cgroup/cpuset.c:1651 at remote_partition_disable+0xf7/0x110\nRIP: 0010:remote_partition_disable+0xf7/0x110\nRSP: 0018:ffffc90001947d88 EFLAGS: 00000206\nRAX: 0000000000007fff RBX: ffff888103b6e000 RCX: 0000000000006f40\nRDX: 0000000000006f00 RSI: ffffc90001947da8 RDI: ffff888103b6e000\nRBP: ffff888103b6e000 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000001 R11: ffff88810b2e2728 R12: ffffc90001947da8\nR13: 0000000000000000 R14: ffffc90001947da8 R15: ffff8881081f1c00\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f55c8bbe0b2 CR3: 000000010b14c000 CR4: 00000000000006f0\nCall Trace:\n <TASK>\n update_prstate+0x2d3/0x580\n cpuset_partition_write+0x94/0xf0\n kernfs_fop_write_iter+0x147/0x200\n vfs_write+0x35d/0x500\n ksys_write+0x66/0xe0\n do_syscall_64+0x6b/0x390\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\nRIP: 0033:0x7f55c8cd4887\n\nReproduction steps (on a 16-CPU machine):\n\n        # cd /sys/fs/cgroup/\n        # mkdir A1\n        # echo +cpuset > A1/cgroup.subtree_control\n        # echo \"0-14\" > A1/cpuset.cpus.exclusive\n        # mkdir A1/A2\n        # echo \"0-14\" > A1/A2/cpuset.cpus.exclusive\n        # echo \"root\" > A1/A2/cpuset.cpus.partition\n        # echo 0 > /sys/devices/system/cpu/cpu15/online\n        # echo member > A1/A2/cpuset.cpus.partition\n\nWhen CPU 15 is offlined, subpartitions_cpus gets cleared because no CPUs\nremain available for the top_cpuset, forcing partitions to share CPUs with\nthe top_cpuset. In this scenario, disabling the remote partition triggers\na warning stating that effective_xcpus is not a subset of\nsubpartitions_cpus. Partitions should be invalidated in this case to\ninform users that the partition is now invalid(cpus are shared with\ntop_cpuset).\n\nTo fix this issue:\n1. Only emit the warning only if subpartitions_cpus is not empty and the\n   effective_xcpus is not a subset of subpartitions_cpus.\n2. During the CPU hotplug process, invalidate partitions if\n   subpartitions_cpus is empty."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/cgroup/cpuset.c"
                    ],
                    "versions": [
                        {
                            "version": "f62a5d39368e34a966c8df63e1f05eed7fe9c5de",
                            "lessThan": "5d8b9d38a7676be7bb5e7d57f92156a98dab39fb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f62a5d39368e34a966c8df63e1f05eed7fe9c5de",
                            "lessThan": "aa7d3a56a20f07978d9f401e13637a6479b13bd0",
                            "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/cgroup/cpuset.c"
                    ],
                    "versions": [
                        {
                            "version": "6.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.4",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "6.15",
                                    "versionEndExcluding": "6.18.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/5d8b9d38a7676be7bb5e7d57f92156a98dab39fb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aa7d3a56a20f07978d9f401e13637a6479b13bd0"
                }
            ],
            "title": "cpuset: fix warning when disabling remote partition",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}