{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53031", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.380Z", "datePublished": "2026-06-24T16:29:39.043Z", "dateUpdated": "2026-08-05T12:32:45.100Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:32:45.100Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Validate node_id in arena_alloc_pages()\n\narena_alloc_pages() accepts a plain int node_id and forwards it through\nthe entire allocation chain without any bounds checking.\n\nValidate node_id before passing it down the allocation chain in\narena_alloc_pages()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - An attacker must use local BPF syscalls to create/use a BPF arena map and load/execute a BPF program that calls the arena kfunc. The vulnerable path is not reachable directly from network, adjacent, or physical input.\nAC:L - The attacker directly controls the `node_id` argument passed to `bpf_arena_alloc_pages()` and can repeatedly trigger the BPF program. No race or external condition is required.\nPR:L - Using BPF arena requires BPF privileges (`CAP_BPF` and `CAP_PERFMON`) or a delegated BPF token, which can be available to a namespaced/container user in a reasonable deployment. Under the required higher-severity tie-break rule, this is scored as low rather than high privilege.\nUI:N - No victim action is required after the attacker has local ability to load and run the BPF program. The attacker can trigger the kfunc directly through BPF execution.\nS:U - The vulnerable component and impacted resource are both the local kernel. This is standard local kernel compromise/DoS scope, not a VM or hardware boundary crossing.\nC:H - The unchecked `node_id` flows into NUMA allocator metadata lookup (`NODE_DATA`/zonelists), creating out-of-bounds or invalid kernel memory access rather than a bounded harmless failure. Under the higher-severity rule, allocator metadata misuse is treated as potentially enabling high-impact information disclosure.\nI:H - Invalid NUMA allocator state can cause the page allocator to operate on bogus per-node/zone structures, which can plausibly corrupt kernel allocator state. Under the higher-severity rule, this is scored as potential high-integrity kernel memory corruption.\nA:H - Invalid negative, out-of-range, or offline node IDs can hit allocator assertions, NULL/invalid dereferences, or corrupted zonelist traversal, causing an oops/panic. The attacker can trigger this repeatedly from the malicious BPF program."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/arena.c"], "versions": [{"version": "317460317a02a1af512697e6e964298dedd8a163", "lessThan": "31d3b4b28e55835646d6829d60023f730dd34e85", "status": "affected", "versionType": "git"}, {"version": "317460317a02a1af512697e6e964298dedd8a163", "lessThan": "e15900888c09480a4c632bc598f1c5bd39bed6d6", "status": "affected", "versionType": "git"}, {"version": "317460317a02a1af512697e6e964298dedd8a163", "lessThan": "fb66e20130f95a93ffea1677252526a9e39170b2", "status": "affected", "versionType": "git"}, {"version": "317460317a02a1af512697e6e964298dedd8a163", "lessThan": "2845989f2ebaf7848e4eccf9a779daf3156ea0a5", "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/bpf/arena.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "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": "6.9", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/31d3b4b28e55835646d6829d60023f730dd34e85"}, {"url": "https://git.kernel.org/stable/c/e15900888c09480a4c632bc598f1c5bd39bed6d6"}, {"url": "https://git.kernel.org/stable/c/fb66e20130f95a93ffea1677252526a9e39170b2"}, {"url": "https://git.kernel.org/stable/c/2845989f2ebaf7848e4eccf9a779daf3156ea0a5"}], "title": "bpf: Validate node_id in arena_alloc_pages()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/arena.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "31d3b4b28e55835646d6829d60023f730dd34e85", "status": "affected", "version": "317460317a02a1af512697e6e964298dedd8a163", "versionType": "git"}, {"lessThan": "e15900888c09480a4c632bc598f1c5bd39bed6d6", "status": "affected", "version": "317460317a02a1af512697e6e964298dedd8a163", "versionType": "git"}, {"lessThan": "fb66e20130f95a93ffea1677252526a9e39170b2", "status": "affected", "version": "317460317a02a1af512697e6e964298dedd8a163", "versionType": "git"}, {"lessThan": "2845989f2ebaf7848e4eccf9a779daf3156ea0a5", "status": "affected", "version": "317460317a02a1af512697e6e964298dedd8a163", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/arena.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.91", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.33", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.10", "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": "FBD648B5-4A2C-4DEB-BE8A-899BDECAED29", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Validate node_id in arena_alloc_pages()\n\narena_alloc_pages() accepts a plain int node_id and forwards it through\nthe entire allocation chain without any bounds checking.\n\nValidate node_id before passing it down the allocation chain in\narena_alloc_pages()."}], "id": "CVE-2026-53031", "lastModified": "2026-07-15T14:37:47.287", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-06-24T17:17:14.490", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2845989f2ebaf7848e4eccf9a779daf3156ea0a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/31d3b4b28e55835646d6829d60023f730dd34e85"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e15900888c09480a4c632bc598f1c5bd39bed6d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb66e20130f95a93ffea1677252526a9e39170b2"}], "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: bpf: Validate node_id in arena_alloc_pages()", "id": "2492275", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492275"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-839", "details": ["A flaw was found in the Linux kernel. The `arena_alloc_pages()` function within the Berkeley Packet Filter (BPF) subsystem does not properly validate the `node_id` parameter. A local attacker could exploit this vulnerability by supplying an invalid `node_id`, which is then used without bounds checking during memory allocation. This could lead to memory corruption, potentially resulting in a denial of service or other system instability."], "name": "CVE-2026-53031", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53031\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53031\nhttps://lore.kernel.org/linux-cve-announce/2026062454-CVE-2026-53031-d9fe@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[317460317a02a1af512697e6e964298dedd8a163,31d3b4b28e55835646d6829d60023f730dd34e85)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[317460317a02a1af512697e6e964298dedd8a163,e15900888c09480a4c632bc598f1c5bd39bed6d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[317460317a02a1af512697e6e964298dedd8a163,fb66e20130f95a93ffea1677252526a9e39170b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[317460317a02a1af512697e6e964298dedd8a163,2845989f2ebaf7848e4eccf9a779daf3156ea0a5)"}}], "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": "generic", "value": "[6.9,6.9]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-06-24T19:00:06.718610+00:00", "updated": "2026-08-12T07:15:02.530462+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}