{"api_version":"1","generated_at":"2026-07-04T17:40:40+00:00","cve":"CVE-2026-53132","urls":{"html":"https://cve.report/CVE-2026-53132","api":"https://cve.report/api/cve/CVE-2026-53132.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53132","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53132"},"summary":{"title":"vsock/virtio: fix potential unbounded skb queue","description":"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)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:30","updated_at":"2026-06-30 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53132","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 077706165717686a2a6a71405fef036cd5b37ae0 1eca304f97a34ed5e921e1f0e06c8b241f25bf12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 077706165717686a2a6a71405fef036cd5b37ae0 9bdc637fde66b63d6cad0caacd034888bb7bf5f5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 077706165717686a2a6a71405fef036cd5b37ae0 100d5b2ffdc6468b9e48532641f29e83efdcb63c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 077706165717686a2a6a71405fef036cd5b37ae0 059b7dbd20a6f0c539a45ddff1573cb8946685b5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-28T06:39:26.465Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12"},{"url":"https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5"},{"url":"https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c"},{"url":"https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5"}],"title":"vsock/virtio: fix potential unbounded skb queue","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53132","datePublished":"2026-06-25T08:38:21.575Z","dateReserved":"2026-06-09T07:44:35.386Z","dateUpdated":"2026-06-28T06:39:26.465Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:30","lastModifiedDate":"2026-06-30 14:44:27","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.5,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53132","Ordinal":"1","Title":"vsock/virtio: fix potential unbounded skb queue","CVE":"CVE-2026-53132","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53132","Ordinal":"1","NoteData":"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)","Type":"Description","Title":"vsock/virtio: fix potential unbounded skb queue"}]}}}