326 lines
17 KiB
JSON
326 lines
17 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-2023-53219",
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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": "2025-09-15T14:19:21.845Z",
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"datePublished": "2025-09-15T14:21:47.459Z",
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"dateUpdated": "2026-08-05T09:13:09.656Z"
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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": "2026-08-05T09:13:09.656Z"
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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\nmedia: netup_unidvb: fix use-after-free at del_timer()\n\nWhen Universal DVB card is detaching, netup_unidvb_dma_fini()\nuses del_timer() to stop dma->timeout timer. But when timer\nhandler netup_unidvb_dma_timeout() is running, del_timer()\ncould not stop it. As a result, the use-after-free bug could\nhappen. The process is shown below:\n\n (cleanup routine) | (timer routine)\n | mod_timer(&dev->tx_sim_timer, ..)\nnetup_unidvb_finidev() | (wait a time)\n netup_unidvb_dma_fini() | netup_unidvb_dma_timeout()\n del_timer(&dma->timeout); |\n | ndev->pci_dev->dev //USE\n\nFix by changing del_timer() to del_timer_sync()."
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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:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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 UAF is reached only through the PCI remove path (netup_unidvb_finidev → netup_unidvb_dma_fini) on a system with the NetUP PCIe DVB card bound; that is a local driver unbind/unload (or local hot-remove) path, not a network or USB-plug attack surface.\nAC:L - An attacker who keeps queuing DVB buffers (mod_timer in netup_unidvb_buf_queue) while triggering remove controls both sides of the del_timer vs. running netup_unidvb_dma_timeout race and can retry until the handler overlaps teardown; this matches guidance that attacker-controlled races score AC:L.\nPR:L - Triggering remove is via local driver unbind/module unload on an already-present card, scored Low consistent with other remove-cleanup CVEs (e.g. CVE-2023-53225) and the rule to prefer higher severity; DVB/vb2 buffer queueing that arms the timer is also reachable to ordinary video-group users.\nUI:N - The attacker initiates streaming and driver removal themselves; no separate victim action such as opening attacker-supplied content is required.\nS:U - The freed netup_unidvb_dev / embedded netup_dma and timer_list are ordinary kernel heap objects in the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - Use-after-free of ndev/dma (dma->ndev, pci_dev, buffer lists) after kfree(ndev) allows a groomed reallocation to be read back through the still-running timeout handler, which per UAF guidance is Confidentiality High.\nI:H - The handler takes dma->lock and mutates free_buffers via list_del/vb2_buffer_done on freed memory, and the timer_list itself lives inside the freed object—heap-spray UAF primitives for arbitrary write/control-flow hijack, scored Integrity High.\nA:H - A use-after-free timer firing against freed dma/ndev reliably causes kernel oops/panic even when not fully exploited, which is Availability High."
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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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"drivers/media/pci/netup_unidvb/netup_unidvb_core.c"
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],
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"versions": [
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{
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"version": "52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e",
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"lessThan": "dd5c77814f290b353917df329f36de1472d47154",
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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": "52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e",
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"lessThan": "90229e9ee957d4514425e4a4d82c50ab5d57ac4d",
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"status": "affected",
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},
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{
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"lessThan": "f9982db735a8495eee14267cf193c806b957e942",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3",
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"status": "affected",
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},
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{
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"version": "52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e",
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"lessThan": "07821524f67bf920342bc84ae8b3dea2a315a89e",
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"status": "affected",
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},
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{
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"version": "52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e",
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"lessThan": "c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc",
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"status": "affected",
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},
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{
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"version": "52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e",
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"lessThan": "0f5bb36bf9b39a2a96e730bf4455095b50713f63",
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"status": "affected",
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"versionType": "git"
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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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"drivers/media/pci/netup_unidvb/netup_unidvb_core.c"
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],
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"versions": [
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{
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"version": "4.3",
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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": "4.3",
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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": "4.14.316",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.284",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.244",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.181",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.113",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.30",
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"lessThanOrEqual": "6.1.*",
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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": "6.3.4",
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"lessThanOrEqual": "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": "6.4",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.3",
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"versionEndExcluding": "4.14.316"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154"
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},
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{
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"url": "https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d"
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},
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{
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"url": "https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523"
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},
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{
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"url": "https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942"
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},
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{
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"url": "https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3"
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},
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{
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"url": "https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e"
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},
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{
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"url": "https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc"
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},
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{
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"url": "https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63"
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}
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],
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"title": "media: netup_unidvb: fix use-after-free at del_timer()",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2023-53219",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-01-14T17:49:56.699110Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2026-01-14T17:52:58.312Z"
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}
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}
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]
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}
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} |