{"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": "2026-06-28T06:39:26.465Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:39:26.465Z"}, "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"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/vmw_vsock/virtio_transport_common.c"], "versions": [{"version": "077706165717686a2a6a71405fef036cd5b37ae0", "lessThan": "1eca304f97a34ed5e921e1f0e06c8b241f25bf12", "status": "affected", "versionType": "git"}, {"version": "077706165717686a2a6a71405fef036cd5b37ae0", "lessThan": "9bdc637fde66b63d6cad0caacd034888bb7bf5f5", "status": "affected", "versionType": "git"}, {"version": "077706165717686a2a6a71405fef036cd5b37ae0", "lessThan": "100d5b2ffdc6468b9e48532641f29e83efdcb63c", "status": "affected", "versionType": "git"}, {"version": "077706165717686a2a6a71405fef036cd5b37ae0", "lessThan": "059b7dbd20a6f0c539a45ddff1573cb8946685b5", "status": "affected", "versionType": "git"}, {"version": "5852a2b573f7a3a29df46296e56aa3491e589cdf", "status": "affected", "versionType": "git"}, {"version": "6.1.63", "lessThan": "6.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/vmw_vsock/virtio_transport_common.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "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": "6.3", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.63"}]}]}], "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"}}}}

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{"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"}