242 lines
12 KiB
JSON
242 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-53132",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-06-09T07:44:35.386Z",
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"datePublished": "2026-06-25T08:38:21.575Z",
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"dateUpdated": "2026-10-19T19:57:25.210Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:33:26.330Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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)"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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. This is a KVM guest-to-host denial-of-service scenario.\nC:N - The bug is unbounded skb queue growth from missing metadata accounting, not an out-of-bounds read, UAF, or data disclosure path. I found no confidentiality primitive.\nI:N - The flaw queues attacker-supplied zero-length skb metadata but does not corrupt memory or provide an arbitrary write/control-flow primitive. I found no integrity impact beyond denial of service.\nA:H - The receive queue can grow without the intended buffer-accounting limit, causing unbounded host kernel memory consumption. A sustained flood can drive OOM or host-wide service loss."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/vmw_vsock/virtio_transport_common.c"
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],
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"versions": [
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{
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"version": "077706165717686a2a6a71405fef036cd5b37ae0",
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"lessThan": "1eca304f97a34ed5e921e1f0e06c8b241f25bf12",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "077706165717686a2a6a71405fef036cd5b37ae0",
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"lessThan": "9bdc637fde66b63d6cad0caacd034888bb7bf5f5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "077706165717686a2a6a71405fef036cd5b37ae0",
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"lessThan": "100d5b2ffdc6468b9e48532641f29e83efdcb63c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "077706165717686a2a6a71405fef036cd5b37ae0",
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"lessThan": "059b7dbd20a6f0c539a45ddff1573cb8946685b5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5852a2b573f7a3a29df46296e56aa3491e589cdf",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.1.63",
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"lessThan": "6.2",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/vmw_vsock/virtio_transport_common.c"
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],
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"versions": [
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{
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"version": "6.3",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.3",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.94",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.36",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.13",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.3",
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"versionEndExcluding": "6.12.94"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.3",
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"versionEndExcluding": "6.18.36"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.3",
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"versionEndExcluding": "7.0.13"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.3",
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"versionEndExcluding": "7.1"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1.63"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12"
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},
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{
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"url": "https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5"
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},
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{
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"url": "https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c"
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},
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{
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"url": "https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5"
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}
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],
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"title": "vsock/virtio: fix potential unbounded skb queue",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-53132",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:25:50.523293Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-400",
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"description": "CWE-400 Uncontrolled Resource Consumption"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T19:57:25.210Z"
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}
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}
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]
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}
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} |