{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50771",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T13:02:21.546Z",
        "datePublished": "2025-12-24T13:06:00.412Z",
        "dateUpdated": "2026-05-11T19:25:13.504Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:25:13.504Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()\n\nRunning rcutorture with non-zero fqs_duration module parameter in a\nkernel built with CONFIG_PREEMPTION=y results in the following splat:\n\nBUG: using __this_cpu_read() in preemptible [00000000]\ncode: rcu_torture_fqs/398\ncaller is __this_cpu_preempt_check+0x13/0x20\nCPU: 3 PID: 398 Comm: rcu_torture_fqs Not tainted 6.0.0-rc1-yoctodev-standard+\nCall Trace:\n<TASK>\ndump_stack_lvl+0x5b/0x86\ndump_stack+0x10/0x16\ncheck_preemption_disabled+0xe5/0xf0\n__this_cpu_preempt_check+0x13/0x20\nrcu_force_quiescent_state.part.0+0x1c/0x170\nrcu_force_quiescent_state+0x1e/0x30\nrcu_torture_fqs+0xca/0x160\n? rcu_torture_boost+0x430/0x430\nkthread+0x192/0x1d0\n? kthread_complete_and_exit+0x30/0x30\nret_from_fork+0x22/0x30\n</TASK>\n\nThe problem is that rcu_force_quiescent_state() uses __this_cpu_read()\nin preemptible code instead of the proper raw_cpu_read().  This commit\ntherefore changes __this_cpu_read() to raw_cpu_read()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/rcu/tree.c"
                    ],
                    "versions": [
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "3d92527a919edd1aa381bdd6c299dd75a8167396",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "98a5b1265a36e9d843a51ddd6c9fa02da50d2c57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "a74af9b937707b42c3fd041aae1ed4ce2f337307",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "80a3e7ab477b3655615fc1627c88c248d4ad28d9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d860d40327dde251d508a234fa00bd0d90fbb656",
                            "lessThan": "ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15",
                            "status": "affected",
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                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/rcu/tree.c"
                    ],
                    "versions": [
                        {
                            "version": "3.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.229",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.163",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.86",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.16",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.2",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3d92527a919edd1aa381bdd6c299dd75a8167396"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/98a5b1265a36e9d843a51ddd6c9fa02da50d2c57"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a74af9b937707b42c3fd041aae1ed4ce2f337307"
                },
                {
                    "url": "https://git.kernel.org/stable/c/80a3e7ab477b3655615fc1627c88c248d4ad28d9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15"
                }
            ],
            "title": "rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()",
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