289 lines
15 KiB
JSON
289 lines
15 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-2026-64440",
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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": "2026-07-19T15:36:31.788Z",
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"datePublished": "2026-07-25T08:51:13.138Z",
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"dateUpdated": "2026-10-19T20:38:29.179Z"
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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": "2026-08-17T04:55:42.056Z"
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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\nstaging: rtl8723bs: fix OOB write in HT_caps_handler()\n\nHT_caps_handler() iterates pIE->length bytes and writes into\nHT_caps.u.HT_cap[], which is a fixed 26-byte array (sizeof struct\nHT_caps_element). Because pIE->length is a raw u8 from an over-the-air\n802.11 AssocResponse frame and is never validated, a malicious AP can\nset it up to 255, causing up to 229 bytes of out-of-bounds writes into\nadjacent fields of struct mlme_ext_info.\n\nTruncate the iteration count to the size of HT_caps.u.HT_cap using\numin() so that data from a longer-than-expected IE is silently ignored\nrather than written out of bounds, preserving interoperability with APs\nthat pad the element. An early return on oversized IEs was considered\nbut rejected: it would bypass the pmlmeinfo->HT_caps_enable = 1\nassignment that precedes the loop, silently disabling HT mode for APs\nthat append extra bytes to the HT Capabilities IE."
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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:N/I:H/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 - A nearby attacker can transmit a crafted 802.11 association response over the air; WiFi management-frame injection requires radio proximity and is not routable.\nAC:L - A malicious AP controls the IE length, contents, and handshake timing, making the bit-clearing overwrite deterministic without a race or uncontrollable condition.\nPR:N - The frame is processed before WPA or 802.1X credential verification, and OnAssocRsp does not authenticate its source BSSID; no target privilege or network credential is required.\nUI:N - Mobile, embedded, and headless systems commonly associate or roam automatically, allowing an evil-twin AP to reach the handler without human action.\nS:U - The corruption affects host-kernel driver state without crossing a VM, IOMMU, sandbox, or other security-authority boundary.\nC:N - The primitive only AND-clears following HT and network metadata and cannot reach pointer-bearing fields; no secret-bearing read or attacker-visible disclosure path was found.\nI:H - The oversized IE causes up to 229 attacker-controlled bit-mask writes beyond the 26-byte array, corrupting live kernel HT information and saved network metadata.\nA:H - The attacker can repeatedly corrupt BSSID, SSID, rate, IE-length, and HT state to prevent association; on a WiFi-dependent controller or IoT device this can sustain total loss of connectivity."
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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/staging/rtl8723bs/core/rtw_wlan_util.c"
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],
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"versions": [
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{
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"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "37f642d47c3648a707df3ceb092eee1adffbfd28",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "8c872b47c7fc32e95e0da1db7512388794adcd69",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "bb3b942da4123b55d1cacf19d1a7d5ba15dbf83a",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "918537a0fbed85aab61fa28ad75e6279070610c9",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "6f91621fc45025ad3c0be796b70e6e4cee22fc69",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "225b6d3fc7e99ac3d20b6c861d1e47d24e7ea31d",
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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": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
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"lessThan": "f8001e1a516ba3b495728c65b61f799cbfad6bd0",
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"status": "affected",
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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/staging/rtl8723bs/core/rtw_wlan_util.c"
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],
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"versions": [
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{
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"version": "4.12",
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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": "4.12",
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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": "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": "6.12.96",
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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": "6.18.39",
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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": "7.1.4",
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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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"operator": "OR",
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.12",
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"versionEndExcluding": "5.15.212"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/37f642d47c3648a707df3ceb092eee1adffbfd28"
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{
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"url": "https://git.kernel.org/stable/c/8c872b47c7fc32e95e0da1db7512388794adcd69"
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{
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"url": "https://git.kernel.org/stable/c/bb3b942da4123b55d1cacf19d1a7d5ba15dbf83a"
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},
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{
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"url": "https://git.kernel.org/stable/c/918537a0fbed85aab61fa28ad75e6279070610c9"
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},
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{
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"url": "https://git.kernel.org/stable/c/6f91621fc45025ad3c0be796b70e6e4cee22fc69"
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"url": "https://git.kernel.org/stable/c/225b6d3fc7e99ac3d20b6c861d1e47d24e7ea31d"
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{
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"url": "https://git.kernel.org/stable/c/f8001e1a516ba3b495728c65b61f799cbfad6bd0"
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}
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],
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"title": "staging: rtl8723bs: fix OOB write in HT_caps_handler()",
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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-2026-64440",
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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": "2026-10-16T15:40:46.718780Z"
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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-787",
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"description": "CWE-787 Out-of-bounds Write"
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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": "2026-10-19T20:38:29.179Z"
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}
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}
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]
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}
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} |