{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-92520",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-16T12:21:13.874Z",
        "datePublished": "2026-09-17T16:10:27.447Z",
        "dateUpdated": "2026-10-21T12:51:46.872Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:51:46.872Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Zero queue and stack outputs on lock failure\n\nQueue and stack pop/peek helpers accept an uninitialized output buffer\nbecause the verifier expects the helper to initialize it. The empty-map\nerror path clears the buffer, but a failed lock acquisition returns\n-EBUSY without writing it.\n\nClear the output before returning -EBUSY so BPF programs cannot observe\nuninitialized stack contents after a failed helper call."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/queue_stack_maps.c"
                    ],
                    "versions": [
                        {
                            "version": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8",
                            "lessThan": "a6090eeb289c5fa45f7b629befac2bd3c19a6dae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8",
                            "lessThan": "23b4bcc79bab5285275912b94e98c286f281de75",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8",
                            "lessThan": "1534c4bff3aaca19c4c9a82f93e9b81f7c983de3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8",
                            "lessThan": "e2396b8a562073787e627a5f483f1bc5c452fa6a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8",
                            "lessThan": "7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "40e34ea01748e5b8afdd40a172868be1e1ab0ede",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "388c9d3eefaea99828ee5000c693128a5b41ee7c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "acabf5df49aa3a4f9c96200102d893351b511a88",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e388671635acf470f0986d874389148fd234620b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "232f0ba4d69263af5912e279fcc32fef2882b1dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.4.258",
                            "lessThan": "5.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.198",
                            "lessThan": "5.11",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.134",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.56",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.6",
                            "lessThan": "6.6",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/queue_stack_maps.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "6.6",
                                    "versionEndExcluding": "6.6.160"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.18.52"
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                                },
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                                    "versionStartIncluding": "6.1.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5.6"
                                }
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a6090eeb289c5fa45f7b629befac2bd3c19a6dae"
                },
                {
                    "url": "https://git.kernel.org/stable/c/23b4bcc79bab5285275912b94e98c286f281de75"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232"
                }
            ],
            "title": "bpf: Zero queue and stack outputs on lock failure",
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}