{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53132", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.386Z", "datePublished": "2026-06-25T08:38:21.575Z", "dateUpdated": "2026-10-19T19:57:25.210Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:26.330Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: fix potential unbounded skb queue\n\nvirtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc.\n\nvirtio_transport_recv_enqueue() skips coalescing for packets\nwith VIRTIO_VSOCK_SEQ_EOM.\n\nIf fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM,\na very large number of packets can be queued\nbecause vvs->rx_bytes stays at 0.\n\nFix this by estimating the skb metadata size:\n\n\t(Number of skbs in the queue) * SKB_TRUESIZE(0)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is in virtio/vhost-vsock receive handling, reached through a local virtual socket channel rather than ordinary IP networking. The highest reasonable scenario is a malicious KVM guest or local vsock peer supplying crafted virtio-vsock packets to a host vsock endpoint.\nAC:L - Once the attacker can supply virtio-vsock headers, repeatedly sending len=0 OP_RW packets with VIRTIO_VSOCK_SEQ_EOM deterministically bypasses payload accounting. No race, timing window, or rare memory layout condition is required.\nPR:N - The vhost-vsock receive path performs address/type/state validation but no host credential, capability, or authentication check before enqueueing the packet. A malicious guest/peer needs no privileges on the vulnerable host kernel to deliver crafted virtio-vsock packets.\nUI:N - No victim user action is required after a reachable vsock endpoint exists. The attacker can flood the receive queue directly.\nS:C - In the vhost-vsock deployment, guest-controlled packets consume host kernel memory, crossing the guest/host security boundary. 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"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 4.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53132", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:25:50.523293Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:30.437", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: vsock/virtio: fix potential unbounded skb queue", "id": "2492753", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492753"}, "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-770", "details": ["A flaw was found in the Linux kernel's vsock/virtio component. A remote attacker could send specially crafted packets with zero length and an End-of-Message (EOM) flag. This could lead to an unbounded queue of packets, consuming excessive memory and potentially causing a Denial of Service (DoS) due to resource exhaustion."], "name": "CVE-2026-53132", "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53132\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53132\nhttps://lore.kernel.org/linux-cve-announce/2026062541-CVE-2026-53132-7ab2@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[077706165717686a2a71405fef036cd5b37ae0,1eca304f97a34ed5e921e1f0e06c8b241f25bf12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[077706165717686a2a71405fef036cd5b37ae0,9bdc637fde66b63d6cad0caacd034888bb7bf5f5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[077706165717686a2a71405fef036cd5b37ae0,100d5b2ffdc6468b9e48532641f29e83efdcb63c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[077706165717686a2a71405fef036cd5b37ae0,059b7dbd20a6f0c539a45ddff1573cb8946685b5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "5852a2b573f7a3a29df46296e56aa3491e589cdf"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.63,6.2)"}}], "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": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "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": "2026-06-25T10:30:17.204117+00:00", "updated": "2026-08-12T07:15:02.524722+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}