CVE-2026-64413

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If vmalloc_node() fails at\n CPU 2, the cleanup loop will blindly decrement and call vfree() on\n newinfo->chainstack[1].\n\nNot a real-world bug, such allocation isn't expected to fail\nin the first place."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable translation path is reached through a local SOL_IP setsockopt(EBT_SO_SET_ENTRIES) call on an IPv4 socket, not through received network traffic.\nAC:H - Exploitation requires a boot-fixed sparse cpu_possible_mask and a per-CPU vmalloc failure after an earlier allocation succeeds. Although memory pressure is attacker-influenceable, these uncommon conditions are not fully attacker-controlled.\nPR:L - The path requires CAP_NET_ADMIN in the socket network namespace, which an unprivileged user can obtain through an owned user and network namespace where unprivileged user namespaces are enabled.\nUI:N - The attacker directly submits the crafted ebtables replacement; no victim action is required.\nS:U - This is ordinary user-namespace-to-kernel privilege escalation within the host security authority, without crossing a VM, hypervisor, or IOMMU boundary.\nC:H - The uninitialized slot can alias a live vmalloc allocation, causing it to be freed and leaving its owner with a groomable use-after-free capable of exposing arbitrary kernel memory.\nI:H - Freeing a live vmalloc-backed kernel object can enable controlled reallocation, arbitrary memory modification, and kernel control-flow hijacking.\nA:H - An invalid vfree can panic kernels configured with panic_on_warn, while 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If vmalloc_node() fails at\n CPU 2, the cleanup loop will blindly decrement and call vfree() on\n newinfo->chainstack[1].\n\nNot a real-world bug, such allocation isn't expected to fail\nin the first place."}], "id": "CVE-2026-64413", "lastModified": "2026-11-10T13:19:35.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64413", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:40:24.345597Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:25.110", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f74d28e903fa4fdf82f870d0aeadddc8196e41c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cbfe53599eebffd188938ab6774cc41794f6f9d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fc7f105451044501a50cfd530cfa3b472c54acbc"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-457"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: netfilter: ebtables: zero chainstack array", "id": "2507110", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507110"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in the Linux kernel's netfilter ebtables component. This vulnerability involves an uninitialized pointer free that can occur when the system's CPU mask is sparse and a memory allocation fails. Under these specific and unlikely conditions, the kernel might attempt to free an uninitialized memory pointer, which could lead to system instability or a denial of service (DoS)."], "name": "CVE-2026-64413", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64413\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64413\nhttps://lore.kernel.org/linux-cve-announce/2026072532-CVE-2026-64413-194c@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2ade612967e2cdfb9290ebcb773f302c82f311fa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2ade612967e2cdfb9290ebcb773f302c82f311fa,42bef500d07b5769d916e9122a3e3fa3fd2245ef)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[42bef500d07b5769d916e9122a3e3fa3fd2245ef,9e6c5169db423e51dcc66a73fd15409c0d38e088)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9e6c5169db423e51dcc66a73fd15409c0d38e088,29bf41a9b59aff9f6197df58641a00037d567ca8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[29bf41a9b59aff9f6197df58641a00037d567ca8,9f74d28e903fa4fdf82f870d0aeadddc8196e41c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9f74d28e903fa4fdf82f870d0aeadddc8196e41c,5ee856e4208acafaaaf7b84824d39b78c21345d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5ee856e4208acafaaaf7b84824d39b78c21345d6,cbfe53599eebffd188938ab6774cc41794f6f9d5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cbfe53599eebffd188938ab6774cc41794f6f9d5,fc7f105451044501a50cfd530cfa3b472c54acbc)"}}], "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": "2.6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "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": "2026-07-25T17:15:03.588696+00:00", "updated": "2026-10-20T09:30:12.545124+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}