298 lines
16 KiB
JSON
298 lines
16 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-2026-74410",
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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": "2026-08-15T05:44:03.892Z",
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"datePublished": "2026-08-15T05:59:18.039Z",
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"dateUpdated": "2026-10-16T19:05:43.968Z"
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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": "2026-08-17T05:46:53.802Z"
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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\nwifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer\n\nIn rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit\ndescriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both\nfirmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478),\ncausing an out-of-bounds read from the pre-allocated DMA buffer when\nskb_put_data copies new_len bytes. The USB transport already validates\nthis (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the\nPCIe path does not.\n\nAdd a check that new_len does not exceed the DMA buffer size."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 8.1,
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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:A - The bug is in rtw_pci_rx_napi() on the rtw88 PCIe WiFi RX path, reached when firmware DMAs received 802.11 frames and raises IMR_ROK; exploitation requires transmitting crafted or maximum-size WiFi frames within radio range, which is an adjacent wireless attack per kernel CVSS guidance.\nAC:L - An adjacent attacker can reliably trigger the bug by sending WiFi traffic that causes firmware to populate RX descriptors with pkt_len (up to 16383) plus pkt_offset (drv_info_sz+shift); sums above RTK_PCI_RX_BUF_SIZE (11478) are possible even with max VHT MPDUs (~11454 bytes), and the PCIe path lacked the USB driver's length validation.\nPR:N - No local account, capabilities, or namespace privileges on the victim are required; any unauthenticated attacker in WiFi range can cause the device to receive frames and invoke the driver RX interrupt/NAPI handler without victim credentials or association to the attacker's network.\nUI:N - Exploitation requires only that the rtw88 PCIe interface is active and receiving frames, which is the default on laptops, desktops, and many embedded systems with WiFi enabled; no additional victim actions such as opening files or mounting filesystems are needed.\nS:U - The vulnerability is confined to kernel memory accessed by the rtw88 host driver during RX processing on the same system; it does not cross a VM, container, or IOMMU security boundary to impact a separate security authority.\nC:H - skb_put_data() copies new_len bytes from a 11478-byte DMA RX skb without bounds checking, performing an out-of-bounds kernel heap read of up to thousands of bytes of adjacent slab memory that may contain pointers, keys, or other sensitive data subsequently embedded in the RX skb.\nI:N - The flaw is an out-of-bounds read via memcpy from the undersized RX buffer into a separately allocated skb; it does not directly overwrite kernel memory or provide an arbitrary write primitive, though leaked data could aid separate exploitation.\nA:H - Reading substantially beyond the mapped 11478-byte RX DMA buffer can access unmapped pages or slab redzones and provoke a kernel fault/oops during interrupt/NAPI processing, and repeated malicious frames can disrupt WiFi RX availability on affected rtw88 PCIe devices."
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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/net/wireless/realtek/rtw88/pci.c"
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],
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"versions": [
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{
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"version": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "913bd7d3d3d842b5c1d2b908a0201efa8fc79793",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "45abc14ab3f15da7d689f1a8809c1a01240a94d9",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "08193e733e5d4790e6c937af86d78793b02709be",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "6a3c384393d3f0b41669ed5a2e88744aad9d87c8",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "26c183a86ea4dd1f2ff90c6f783649e7f5722a10",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "01155ded5d4dad61840a9a3c33ab56778ef1f100",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "1554fa522f16ec7c5c342ad33fe734eeb6eb2452",
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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": "e3037485c68ec1a299ff41160d8fedbd4abc29b9",
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"lessThan": "6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6",
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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/net/wireless/realtek/rtw88/pci.c"
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],
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"versions": [
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{
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"version": "5.2",
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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": "5.2",
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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": "5.10.261",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "5.2",
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"versionEndExcluding": "5.10.261"
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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": "5.2",
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"versionEndExcluding": "5.15.212"
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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": "5.2",
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"versionEndExcluding": "6.1.178"
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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": "5.2",
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"versionEndExcluding": "6.6.145"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.2",
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"versionEndExcluding": "6.12.97"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.18.40"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.2",
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"versionEndExcluding": "7.1.5"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.2",
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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/913bd7d3d3d842b5c1d2b908a0201efa8fc79793"
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},
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{
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"url": "https://git.kernel.org/stable/c/45abc14ab3f15da7d689f1a8809c1a01240a94d9"
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},
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{
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"url": "https://git.kernel.org/stable/c/08193e733e5d4790e6c937af86d78793b02709be"
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},
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{
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"url": "https://git.kernel.org/stable/c/6a3c384393d3f0b41669ed5a2e88744aad9d87c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/26c183a86ea4dd1f2ff90c6f783649e7f5722a10"
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},
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{
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"url": "https://git.kernel.org/stable/c/01155ded5d4dad61840a9a3c33ab56778ef1f100"
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},
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{
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"url": "https://git.kernel.org/stable/c/1554fa522f16ec7c5c342ad33fe734eeb6eb2452"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6"
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}
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],
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"title": "wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer",
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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-2026-74410",
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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": "2026-10-16T18:56:04.346060Z"
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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": "2026-10-16T19:05:43.968Z"
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}
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}
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]
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}
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} |